Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2017	Oct. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	ST JOE CO
Trading Symbol	JOE
Entity Central Index Key	0000745308
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding (in shares)		66,321,224

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Investment in real estate, net	$ 337,509	$ 314,620
Cash and cash equivalents	166,773	241,111
Investments	145,236	175,725
Restricted investments	4,462	5,636
Income tax receivable	0	27,057
Claim settlement receivable	7,982	7,804
Other assets	40,500	38,410
Property and equipment, net of accumulated depreciation of $60,365 and $59,404 at September 30, 2017 and December 31, 2016, respectively	9,282	8,992
Investments held by special purpose entities	207,942	208,590
Total assets	919,686	1,027,945
LIABILITIES:
Debt	55,738	55,040
Other liabilities	49,876	40,950
Deferred tax liabilities	70,839	68,846
Senior notes held by special purpose entity	176,479	176,310
Total liabilities	352,932	341,146
EQUITY:
Common stock, no par value; 180,000,000 shares authorized; 74,348,160 and 74,342,826 issued at September 30, 2017 and December 31, 2016, respectively; and 66,536,223 and 74,342,826 outstanding at September 30, 2017 and December 31, 2016, respectively	572,087	572,040
Retained earnings	115,821	94,746
Accumulated other comprehensive (loss) income	(1,191)	2,507
Treasury stock at cost, 7,811,937 shares held at September 30, 2017	(135,995)	0
Total stockholders’ equity	550,722	669,293
Non-controlling interest	16,032	17,506
Total equity	566,754	686,799
Total liabilities and equity	919,686	1,027,945
Variable Interest Entities
ASSETS
Investment in real estate, net	59,877	63,362
Cash and cash equivalents	5,099	3,965
Other assets	12,229	13,209
Investments held by special purpose entities	207,942	208,590
Total assets	285,147	289,126
LIABILITIES:
Debt	46,977	47,519
Other liabilities	2,221	4,275
Senior notes held by special purpose entity	176,479	176,310
Total liabilities	$ 225,677	$ 228,104

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Property and equipment, Accumulated depreciation	$ 60,365	$ 59,404
Common stock, shares authorized (in shares)	180,000,000	180,000,000
Common stock, issued (in shares)	74,348,160	74,342,826
Common stock, outstanding (in shares)	66,536,223	74,342,826
Treasury stock (in shares)	7,811,937

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Real estate revenue	$ 10,707	$ 4,163	$ 19,383	$ 17,988
Resorts and leisure revenue	18,198	19,046	45,633	47,590
Leasing revenue	2,856	2,685	7,911	7,366
Timber revenue	1,893	1,298	4,308	4,053
Total revenue	33,654	27,192	77,235	76,997
Expenses:
Cost of real estate revenue	6,405	1,949	10,350	6,688
Cost of resorts and leisure revenue	14,513	15,438	38,200	40,402
Cost of leasing revenue	842	710	2,308	2,219
Cost of timber revenue	167	213	562	626
Other operating and corporate expenses	4,968	5,193	15,303	17,736
Depreciation, depletion and amortization	2,306	2,094	6,291	6,484
Total expenses	29,201	25,597	73,014	74,155
Operating income	4,453	1,595	4,221	2,842
Other income (expense):
Investment income, net	6,452	4,689	31,110	10,378
Interest expense	(3,038)	(3,075)	(9,117)	(9,255)
Claim settlement	0	0	0	12,548
Other income, net	917	435	5,560	1,487
Total other income, net	4,331	2,049	27,553	15,158
Income before income taxes	8,784	3,644	31,774	18,000
Income tax expense	(2,643)	(948)	(10,831)	(5,170)
Net income	6,141	2,696	20,943	12,830
Net (income) loss attributable to non-controlling interest	(198)	15	132	356
Net income attributable to the Company	$ 5,943	$ 2,711	$ 21,075	$ 13,186
Basic and Diluted
Weighted average shares outstanding (in shares)	70,202,807	74,342,826	72,037,772	74,496,058
Net income per share attributable to the Company (in dollars per share)	$ 0.08	$ 0.04	$ 0.29	$ 0.18

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income	$ 6,141	$ 2,696	$ 20,943	$ 12,830
Other comprehensive (loss) income, net of tax:
Reclassification of realized loss (gain) included in earnings	104	(40)	(10,757)	(40)
Reclassification of other-than-temporary impairment loss included in earnings	403	0	769	0
Total before income taxes	(172)	3,217	(6,017)	3,219
Income tax (expense) benefit	(75)	(1,238)	2,319	(1,239)
Total other comprehensive income (loss), net of tax	(247)	1,979	(3,698)	1,980
Total comprehensive income, net of tax	5,894	4,675	17,245	14,810
Available-for-sale investments
Other comprehensive (loss) income, net of tax:
Net unrealized (loss) gain on investments	(683)	3,257	3,967	3,259
Restricted investments
Other comprehensive (loss) income, net of tax:
Net unrealized (loss) gain on investments	$ 4	$ 0	$ 4	$ 0

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Non-controlling Interest
Balance (in shares) at Dec. 31, 2016	74,342,826	74,342,826
Balance at beginning period at Dec. 31, 2016	$ 686,799	$ 572,040	$ 94,746	$ 2,507	$ 0	$ 17,506
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contribution from non-controlling interest	188					188
Capital distribution to non-controlling interest	(1,530)					(1,530)
Issuance of common stock for director’s fees (in shares)		5,334
Issuance of common stock for director’s fees	$ 47	$ 47
Repurchase of common shares (in shares)	(7,811,937)	(7,811,937)
Repurchase of common shares	$ (135,995)				(135,995)
Other comprehensive loss	(3,698)			(3,698)
Net income	$ 20,943		21,075			(132)
Balance (in shares) at Sep. 30, 2017	66,536,223	66,536,223
Balance at period end at Sep. 30, 2017	$ 566,754	$ 572,087	$ 115,821	$ (1,191)	$ (135,995)	$ 16,032

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 20,943	$ 12,830
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	6,291	6,484
Stock based compensation	47	93
Gain on sale of investments	(10,757)	(40)
Other-than-temporary impairment loss	769	0
Deferred income tax expense	4,312	920
Cost of real estate sold	9,043	5,091
Expenditures for and acquisition of real estate to be sold	(6,137)	(5,397)
Accretion income and other	(2,574)	(1,544)
Impairment losses	133	357
Changes in operating assets and liabilities:
Notes receivable	(1,548)	518
Claim settlement receivable	0	(12,746)
Other assets	(1,468)	1,646
Other liabilities	4,077	412
Income taxes receivable	26,671	1,948
Net cash provided by operating activities	49,802	10,572
Cash flows from investing activities:
Expenditures for operating property	(25,872)	(3,146)
Expenditures for property and equipment	(2,520)	(632)
Proceeds from the disposition of assets	0	3
Purchases of investments	(104,008)	(308,174)
Maturities of investments	0	185,000
Sales of investments	144,256	83,307
Maturities of assets held by special purpose entities	787	787
Net cash provided by (used in) investing activities	12,643	(42,855)
Cash flows from financing activities:
Capital contribution from non-controlling interest	188	0
Capital distribution to non-controlling interest	(1,530)	0
Repurchase of common shares	(135,995)	(14,820)
Borrowings on construction loan	1,624	0
Principal payments for debt	(1,050)	(384)
Debt issue costs	(20)	0
Net cash used in financing activities	(136,783)	(15,204)
Net decrease in cash and cash equivalents	(74,338)	(47,487)
Cash and cash equivalents at beginning of the period	241,111	212,773
Cash and cash equivalents at end of the period	166,773	165,286
Cash paid during the period for:
Interest expense	10,879	10,921
Income taxes	5,403	2,302
Non-cash financing and investing activities:
Increase in Community Development District debt	59	21
Expenditures for operating properties and property and equipment financed through accounts payable	$ 4,125	$ 147

Nature of Operations	9 Months Ended
Nature of Operations	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of Operations The St. Joe Company together with its consolidated subsidiaries (“St. Joe” or the “Company”) is a Florida real estate development, asset management and operating company with real estate assets and operations currently concentrated primarily between Tallahassee and Destin, Florida. The Company conducts primarily all of its business in the following five reportable operating segments: 1) residential real estate, 2) commercial real estate, 3) resorts and leisure, 4) leasing operations and 5) forestry.

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for reporting on Form 10-Q. Accordingly, certain information and footnotes required by United States generally accepted accounting principles (“GAAP”) for complete financial statements are not included herein. The unaudited interim condensed consolidated financial statements include the accounts of the Company and all of its majority-owned and controlled subsidiaries and variable interest entities where the Company is the primary beneficiary. Investments in joint ventures and limited partnerships in which the Company does not have a controlling interest are accounted for by the equity method. All significant intercompany transactions and balances have been eliminated in consolidation. The December 31, 2016 balance sheet amounts have been derived from the Company’s December 31, 2016 audited consolidated financial statements. Operating results for the nine months ended September 30, 2017 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2017.

A variable interest entity (“VIE”) is an entity in which a controlling financial interest may be achieved through arrangements that do not involve voting interests. A VIE is required to be consolidated by its primary beneficiary, which is the entity that possesses the power to direct the activities of the VIE that most significantly impact the VIEs economic performance and has the obligation to absorb losses or the right to receive benefits from the VIE that are significant to the entity. The Company consolidates VIEs when it is the primary beneficiary of the VIE, including real estate joint ventures determined to be VIEs (see Note 8. Real Estate Joint Ventures).

The interim condensed consolidated financial statements reflect all normal recurring adjustments that, in the opinion of management, are necessary for fair presentation of the information contained herein. The interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. The Company adheres to the same accounting policies in preparation of its unaudited interim condensed consolidated financial statements as the Company’s December 31, 2016 annual financial statements. As required under GAAP, interim accounting for certain expenses, including income taxes, are based on full year assumptions. For interim financial reporting purposes, income taxes are recorded based upon estimated annual income tax rates.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates and assumptions including investments in real estate, real estate impairment assessments, investments, other-than-temporary investment impairment assessments, retained interest investments, accruals and deferred income taxes. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash and cash equivalents include cash on hand, bank demand accounts, money market instruments and short term commercial paper having original maturities, at acquisition date, of ninety days or less.

Investments

Investments and restricted investments consist of available-for-sale securities recorded at fair value, which is established through external pricing services that use quoted market prices and pricing data from recently executed market transactions. Unrealized gains and temporary losses on investments, net of tax, are recorded in other comprehensive (loss) income. Realized gains and losses on investments are determined using the specific identification method. The amortized cost of debt securities are adjusted for amortization of premiums and accretion of discounts to maturity computed under the effective interest method. Such amortization and accretion is included in investment income, net.

The Company evaluates investments classified as available-for-sale with an unrealized loss to determine if they are other-than-temporarily impaired. This evaluation is based on various factors, including the financial condition, business prospects, industry and creditworthiness of the issuer, severity and length of time the securities were in a loss position, the Company’s ability and intent to hold investments until the unrealized loss is recovered or until maturity and the amount of the unrealized loss. If a decline in fair value is considered other-than-temporary, the decline is then bifurcated into its credit and non-credit related components. The amount of the credit-related component is recognized in earnings, and the amount of the non-credit related component is recognized in other comprehensive (loss) income, unless the Company intends to sell the security or it is more likely than not that the Company will be required to sell the security prior to its anticipated recovery.

Restricted Investments

The Company’s restricted investments are related to the Company’s deferred compensation plan. As part of the Pension Plan termination in 2014, the Company directed the Pension Plan to transfer the Pension Plan’s surplus assets into a suspense account in the Company’s 401(k) Plan. The Company has retained the risks and rewards of ownership of these assets; therefore, the assets held in the suspense account are included in the Company’s condensed consolidated balance sheets until they are allocated to current and future 401(k) plan participants for up to the next four years. See Note 14. Employee Benefit Plan.

Fair Value Measurements

Fair value is an exit price, representing the amount that would be received by selling an asset or paying to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability. A three-tier fair value hierarchy is established as a basis for considering such assumptions and for inputs used in the valuation methodologies in measuring fair value:

Level 1. Quoted prices in active markets for identical assets or liabilities;

Level 2. Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and

Level 3. Unobservable inputs in which there is little or no market data, such as internally-developed valuation models which require the reporting entity to develop its own assumptions.

Long-Lived Assets

Long-lived assets include the Company’s investments in operating and development property and property and equipment. The Company reviews its long-lived assets for impairment quarterly to determine whether events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. As part of the Company’s review for impairment of its long-lived assets, the Company reviews the long-lived asset’s carrying value, current period actual financial results as compared to prior period and forecast contained in the Company’s business plan and any other events or changes in circumstances to identify whether an indicator of potential impairment may exist. Some of the events or changes in circumstances that are considered by the Company as indicators of potential impairment include:


•	a prolonged decrease in the fair value or demand for the Company’s properties;


•	a change in the expected use or development plans for the Company’s properties;


•	a material change in strategy that would affect the fair value of the Company’s properties;


•	continuing operating or cash flow loss for an operating property;


•	an accumulation of costs in excess of the projected costs for a development property; and


•	any other adverse change that may affect the fair value of the property.

The Company uses varying methods to determine if an impairment exists, such as (i) considering indicators of potential impairment, (ii) analyzing expected future cash flows and comparing the expected future undiscounted cash flows of the property to its carrying value or (iii) determining market resale values.

During the three and nine months ended September 30, 2017, the Company recorded an impairment charge of $0.1 million included in the cost of real estate revenue, related to a residential property. During the three and nine months ended September 30, 2016, the Company recorded an impairment charge of $0.4 million, included in the cost of real estate revenue, related to a commerce park.

Comprehensive Income

The Company’s comprehensive income includes unrealized gains and temporary losses on available-for-sale securities and restricted investments.

Income Taxes

The Company’s provision for income taxes includes the current tax owed on the current period earnings, as well as a deferred provision which reflects the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective income tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Changes in existing tax laws and rates, their related interpretations, as well as the uncertainty generated by the prospect of tax legislation in the future may affect the amounts of deferred tax liabilities or the realizability of deferred tax assets.

For tax positions the Company has taken or expects to take in a tax return, the Company applies a more likely than not assessment (i.e., there is a greater than 50 percent chance) about whether the tax position will be sustained upon examination by the appropriate tax authority with full knowledge of all relevant information. Amounts recorded for uncertain tax positions are periodically assessed, including the evaluation of new facts and circumstances, to ensure sustainability of the position. The Company records interest related to unrecognized tax benefits, if any, in interest expense and penalties in other income, net.

Concentration of Risks and Uncertainties

The Company’s real estate investments are concentrated in Northwest Florida in a number of specific development projects. Uncertain economic or other conditions could have an adverse impact on the Company’s real estate values and could cause the Company to sell assets at depressed values in order to pay ongoing obligations.

Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash, cash equivalents, investments, other receivables, investments held by special purpose entity or entities (“SPE”) and investments in retained interests. The Company deposits and invests cash with regional financial institutions and as of September 30, 2017 these balances exceed the amount of F.D.I.C. insurance provided on such deposits. In addition, as of September 30, 2017, the Company had $10.0 million invested in U.S. Treasury securities, $101.5 million invested in eight issuers of corporate debt securities that are non-investment grade and $33.7 million invested in four issuers of preferred stock that are non-investment grade. In addition, as of September 30, 2017, the Company had investments of $141.6 million in short term commercial paper from nine issuers.

Earnings Per Share

Basic and diluted earnings per share is calculated by dividing net income by the average number of common shares outstanding for the period. For the three and nine months ended September 30, 2017 and 2016, basic and diluted average shares outstanding were the same and there were no outstanding common stock equivalents as of September 30, 2017 or December 31, 2016. Non-vested restricted stock is included in outstanding shares at the time of grant.

Revenue and Revenue Recognition

Revenue consists primarily of real estate sales, resorts and leisure operations, leasing operations, and timber sales. Taxes collected from customers and remitted to governmental authorities (e.g. sales tax) are excluded from revenue and costs and expenses.

Real Estate Revenue

Revenue from real estate sales, including sales of homesites, commercial properties and rural or timberland, is recognized when a sale is closed and title transfers to the buyer, the buyer’s initial investment is adequate, any receivables are probable of collection, the usual risks and rewards of ownership have been transferred to the buyer and the Company does not have significant continuing involvement with the real estate sold.

The buyer’s minimum initial investment requirement is typically the receipt of cash for approximately twenty to twenty-five percent of the sales value depending on the type and use of the property purchased. If the minimum initial investment requirement is not met, revenue may be deferred depending on the circumstances.

As part of the purchase price consideration for a homesite from sales to homebuilders, the Company may receive a percentage of the sale price of the completed home if the home price or gross profit of the home exceeds a negotiated threshold. These lot residuals are recognized as revenue when consideration is received by the Company in periods subsequent to the initial recognition of revenue for the sale of the homesite.

Resorts and Leisure Revenue

Resorts and leisure revenue includes service and rental fees associated with the WaterColor Inn and the Company’s vacation rental programs in WaterColor, WaterSound Beach and surrounding communities. In addition, other resorts and leisure revenue includes club membership sales, membership reservations, daily play at golf courses, merchandise sales, food and beverage sales, marina boat slip rentals, fuel sales, and management services of The Pearl Hotel. The revenue is generally recognized as services are provided. Vacation rental revenue includes the entire rental fee collected from the customer, including the homeowner’s portion. A percentage of the fee is remitted to the homeowner and presented in cost of resorts and leisure revenue. The Company is the principal in its vacation rental business and has determined that it is the primary obligor to the guest, as it has sole discretion in establishing prices and provides the majority of the services to the guest. Club membership revenue is recognized when billed to the member and the non-refundable initiation fee is deferred and recognized ratably over the estimated membership period. Revenue generated from the Company’s management services of The Pearl Hotel includes a management fee, fifty percent of certain resort fees and a percentage of The Pearl Hotel’s gross operating profit.

Leasing Revenue

Leasing revenue consists of long term rental revenue from retail, office and commercial operations, cell towers and other assets, which is recognized as earned, using the straight-line method over the life of each lease. Leasing revenue includes properties located in the Company’s consolidated Pier Park North JV and Windmark JV, as well as the Company’s industrial park, VentureCrossings, and other properties. Certain leases provide for tenant occupancy during periods for which no rent is due or where minimum rent payments change during the lease term. Accordingly, a receivable or liability is recorded representing the difference between the straight-line rent and the rent that is contractually due from the tenant.

Forestry Product Revenue

Revenue from the sale of the Company’s forestry products is primarily derived from pay-as-cut sales contracts or timber bid sales, whereby risk of loss and title to the trees transfer to the buyer when cut by the buyer. Under a pay-as-cut sales contract, the buyer or some other third party is responsible for all logging and hauling costs, if any.

Timber bid sales are agreements in which the buyer agrees to purchase and harvest specified timber (i.e. mature pulpwood and/or sawlogs) on a tract of land over the term of the contract. Unlike a pay-as-cut sales contract, risk of loss and title to the trees transfer to the buyer when the contract is signed. The buyer pays the full purchase price when the contract is signed and the Company does not have any additional performance obligations.

Recently Issued Accounting Pronouncements

Revenue Recognition

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09 that establishes the principles used to recognize revenue for all entities. In March 2016, the FASB issued ASU 2016-08 that further clarifies the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10 that clarifies guidance on identifying performance obligations and to improve the operability and understandability of licensing implementation guidance. In May 2016, the FASB issued ASU 2016-11 that rescinds SEC guidance pursuant to announcements at the March 3, 2016 Emerging Issues Task Force Meeting. In May 2016, the FASB issued ASU 2016-12 that provides narrow-scope improvements and practical expedients to Revenue from Contracts with Customers. In December 2016, the FASB issued ASU 2016-20 that includes technical corrections and improvements to ASU 2014-09. The new guidance will be effective for annual and interim periods beginning after December 15, 2017. The Company has elected to implement ASU 2014-09 using the modified retrospective application, with the cumulative effect recorded as an adjustment to opening retained earnings at January 1, 2018. The Company is continuing to evaluate the impact of adopting this guidance and as a result of this evaluation currently does not expect it will have a material impact on its financial condition, results of operations or cash flows. The Company expects an impact to revenue-related disclosures as a result of adopting this guidance.

Financial Instruments

In January 2016, the FASB issued ASU 2016-01 that amends existing guidance to address certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The new guidance will require equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in results of operations. Additionally, certain disclosure requirements and other aspects of accounting for financial instruments will change as a result of the new guidance, which is effective for interim and annual reporting periods beginning after December 15, 2017. The Company plans to adopt this guidance effective January 1, 2018 using a cumulative-effect adjustment to retained earnings as of the date of adoption. The Company has evaluated the impact of the adoption of this guidance, and as a result of this evaluation, determined the change in the fair value of its equity investments after January 1, 2018, will be recognized in the consolidated statements of income rather than the consolidated statements of comprehensive income, but is not expected to have a material impact on its financial condition, results of operations or cash flows.

Leases

In February 2016, the FASB issued ASU 2016-02 that amends the existing accounting standards for lease accounting, including requiring lessees to recognize both finance and operating leases with terms of more than 12 months on the balance sheet. The accounting applied by a lessor is largely unchanged from existing guidance. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements. The new guidance will be effective for annual and interim periods beginning after December 15, 2018 and requires a modified retrospective adoption. The Company is currently evaluating the impact that the adoption of this guidance will have on its financial condition, results of operations and cash flows.

Financial Instruments - Credit Losses

In June 2016, the FASB issued ASU 2016-13 that requires a financial asset measured at amortized cost to be presented at the net amount expected to be collected and requires that credit losses from available-for-sale debt securities be presented as an allowance for credit loss. This new guidance will be effective for annual and interim periods beginning after December 15, 2019, with early adoption permitted for annual and interim periods beginning after December 15, 2018. The Company is currently evaluating the impact that the adoption of this guidance will have on its financial condition, results of operations and cash flows.

Statement of Cash Flows

In August 2016, the FASB issued ASU 2016-15 that amends the classification of certain cash receipts and cash payments, to reduce the diversity in how these cash receipts and cash payments are presented and classified in the statement of cash flows. The new standard is effective for annual periods beginning after December 15, 2017, and interim periods within those fiscal years, with early adoption permitted, including adoption in an interim period. As this guidance only affects the classification within the statement of cash flows, it is not currently expected to have an impact on the Company’s cash flows.

Statement of Cash Flows - Restricted Cash

In November 2016, the FASB issued ASU 2016-18 that requires that the statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendment is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years and should be applied using a retrospective transition method to each period presented. Early adoption is permitted, including adoption in an interim period. ASU 2016-18 will be effective for the Company on January 1, 2018 and is not expected to have a significant impact on the Company’s cash flows.

Investment in Real Estate

9 Months Ended

Sep. 30, 2017

Real Estate [Abstract]

Investment in Real Estate

Real estate by property type and segment includes the following:



	September 30, 2017		December 31, 2016
Development property:
Residential real estate	$	101,697	$	101,292
Commercial real estate	55,060		56,073
Resorts and leisure	2,489		263
Leasing operations	18,582		2,291
Forestry	2,488		2,492
Corporate	2,530		2,438
Total development property	182,846		164,849

Operating property:
Residential real estate	7,344		8,097
Resorts and leisure	105,860		107,029
Leasing operations	92,768		82,336
Forestry	19,357		19,608
Other	50		50
Total operating property	225,379		217,120
Less: Accumulated depreciation	70,716		67,349
Total operating property, net	154,663		149,771
Investment in real estate, net	$	337,509	$	314,620

Development property consists of land the Company is developing or intends to develop for sale or future operations and includes direct costs associated with the land, development and construction costs and indirect costs. Residential real estate includes primary residential and resort residential communities. Commercial real estate consists of land for commercial and industrial uses, including land holdings near the Northwest Florida Beaches International Airport and Port of Port St. Joe. Resorts and leisure development property consists of the improvement and expansion of existing beach club property. Leasing development property primarily includes the land development and construction of buildings for lease in VentureCrossings and Pier Park Crossings JV. Development property in the leasing operations and resorts and leisure segments will be reclassified as operating property as it is placed into service.

Operating property includes property that the Company uses for operations and activities. Residential real estate operating property consists primarily of residential utility assets. The resorts and leisure operating property includes the WaterColor Inn, certain vacation rental properties, golf courses, a beach club and marinas. Leasing operating property includes property developed or purchased by the Company and used for retail and commercial rental purposes, including the Beckrich Office Park, property in the Pier Park North JV, as well as other properties. Forestry operating property includes the Company’s timberlands. Operating property may be sold in the future as part of the Company’s principal real estate business.

Investments

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Investments

At September 30, 2017, investments and restricted investments classified as available-for-sale securities were as follows:



	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
Investments:
U.S. Treasury securities	$	9,995	$	1	$	—	$	9,996
Corporate debt securities	103,251		778		2,522		101,507
Preferred stock	33,923		708		898		33,733
	147,169		1,487		3,420		145,236
Restricted investments:
Short-term bond	4,239		6		—		4,245
Money market funds	217		—		—		217
	4,456		6		—		4,462
	$	151,625	$	1,493	$	3,420	$	149,698

At December 31, 2016, investments and restricted investments classified as available-for-sale securities were as follows:



	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
Investments:
Corporate debt securities	$	135,590	$	5,311	$	1,769	$	139,132
Preferred stock	36,048		656		111		36,593
	171,638		5,967		1,880		175,725
Restricted investments:
Short-term bond	4,232		—		6		4,226
Money market fund	1,410		—		—		1,410
	5,642		—		6		5,636
	$	177,280	$	5,967	$	1,886	$	181,361

Mr. Bruce R. Berkowitz is the Chairman of the Company’s Board of Directors (the “Board”). He is the Manager of, and controls entities that own and control, Fairholme Holdings, LLC, which wholly owns Fairholme Capital Management, L.L.C. (“FCM”, a registered investment advisor registered with the Securities and Exchange Commission) and the Fairholme Trust Company, L.L.C. (“FTC”, a non-depository trust company regulated by the Florida Office of Financial Regulation). Mr. Berkowitz is the Chief Investment Officer of FCM, and the Chief Executive Officer and a director of FTC. Since April 2013, FCM has provided investment advisory services to the Company directly, or more recently, as the sub-advisor to FTC. Neither FCM nor FTC receives any compensation for services as the Company’s investment advisor. As of September 30, 2017, clients of FCM and FTC beneficially owned approximately 40.58% of the Company’s common stock. FCM and its client The Fairholme Fund, a series of the Fairholme Funds, Inc., may be deemed affiliates of the Company.

Both Mr. Cesar Alvarez and Mr. Howard Frank are members of the Company’s Board and also serve as directors of Fairholme Funds, Inc. Mr. Alvarez is also a director of FTC.

Pursuant to the terms of an Investment Management Agreement, as amended, with the Company (the “Agreement”), FTC agreed to supervise and direct the investments of investment accounts established by the Company in accordance with the investment guidelines and restrictions approved by the Investment Committee of the Company’s Board. The investment guidelines are set forth in the Agreement and require that, as of the date of any investment: (i) no more than 15% of the investment account may be invested in securities of any one issuer (excluding the U.S. Government), (ii) any investment in any one issuer (excluding the U.S. Government) that exceeds 10% of the investment account, but not 15%, requires the consent of at least two members of the Investment Committee, (iii) 25% of the investment account must be held in cash or cash equivalents, (iv) the investment account is permitted to be invested in common equity securities; however, common stock investments shall be limited to exchange-traded common equities, shall not exceed 5% ownership of a single issuer and, cumulatively, the common stock held in the Company’s investment portfolio shall not exceed $100.0 million market value, and (v) the aggregate market value of investments in common stock, preferred stock or other equity investments cannot exceed 25% of the market value of the Company’s investment portfolio at the time of purchase.

As of September 30, 2017, the investment account included $10.0 million of U.S. Treasury securities, $101.5 million of corporate debt securities and $33.7 million of preferred stock. Of the $101.5 million corporate debt securities and $33.7 million preferred stock $9.2 million and $0.2 million, respectively, were issued by Sears Holdings Corporation or affiliates, of which Mr. Berkowitz serves on the board of directors and may be deemed an affiliate of FCM, or the Company. On October 14, 2017, Mr. Berkowitz notified Sears Holding Corporation that effective October 31, 2017, he would step down from their board of directors.

During the three months ended September 30, 2017, realized losses from the sale of available for-sale securities were $0.1 million. During the nine months ended September 30, 2017, realized gains from the sale of available for-sale securities were $10.8 million. During the nine months ended September 30, 2017, proceeds from the sale of available-for-sale securities were $144.3 million.

During both the three and nine months ended September 30, 2016, realized gains from the sale of available for-sale securities were less than $0.1 million. During the nine months ended September 30, 2016, proceeds from the sale of available-for-sale securities were $83.3 million and proceeds from the maturity of available-for-sale securities were $185.0 million.

The following table provides the corporate debt securities, preferred stock and restricted investments unrealized loss position and related fair values:



	As of September 30, 2017								As of December 31, 2016
	Less Than 12 Months				12 Months or Greater				Less Than 12 Months				12 Months or Greater
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investments:
Corporate debt securities	42,178		2,034		28,142		488		64,516		1,410		6,971		359
Preferred stock	11,729		871		169		27		—		—		153		111
Restricted investments:
Short-term bond	—		—		—		—		4,226		6		—		—
	$	53,907	$	2,905	$	28,311	$	515	$	68,742	$	1,416	$	7,124	$	470

As of September 30, 2017, the Company had investments with an unrealized loss of $3.4 million related to corporate debt securities and preferred stock. The Company had an unrealized loss of $1.9 million as of December 31, 2016 related to corporate debt securities, preferred stock and restricted investments. As of September 30, 2017 and December 31, 2016, the Company did not intend to sell the investments with a material unrealized loss and it is more likely than not that the Company will not be required to sell any of these securities prior to their anticipated recovery, which could be maturity. During the three months ended September 30, 2017, the Company determined that an unrealized loss related to its corporate debt securities was other-than-temporarily impaired and recorded an impairment of $0.4 million for credit-related loss in investment income, net in the Company's condensed consolidated statements of income. During the nine months ended September 30, 2017, the Company determined that an unrealized loss related to its corporate debt securities and preferred stock was other-than-temporarily impaired and recorded an impairment of $0.8 million for credit-related loss in investment income, net in the Company's condensed consolidated statements of income.

The net carrying value and estimated fair value of investments and restricted investments classified as available-for-sale at September 30, 2017, by contractual maturity are shown in the following table. Actual maturities may differ from contractual maturities since certain borrowers have the right to call or prepay obligations.



	Amortized Cost		Fair Value
Due in one year or less	$	13,974	$	13,944
Due after one year through five years	95,423		93,476
Due after five year through ten years	3,757		4,025
Due after ten years through fifteen years	92		58
	113,246		111,503
Preferred stock	33,923		33,733
Restricted investments	4,456		4,462
	$	151,625	$	149,698

Financial Instruments and Fair Value Measurements

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Financial Instruments and Fair Value Measurements

Fair Value Measurements

The financial instruments measured at fair value on a recurring basis at September 30, 2017 were as follows:



	Level 1		Level 2		Level 3		Total Fair Value
Cash equivalents:
Money market funds	$	5,947	$	—	$	—	$	5,947
Commercial paper	141,618		—		—		141,618
	147,565		—		—		147,565
Investments:
U.S. Treasury securities	9,996		—		—		9,996
Corporate debt securities	—		101,507		—		101,507
Preferred stock	10,903		22,830		—		33,733
	20,899		124,337		—		145,236
Restricted investments:
Short-term bond	4,245		—		—		4,245
Money market fund	217		—		—		217
	4,462		—		—		4,462
	$	172,926	$	124,337	$	—	$	297,263

The financial instruments measured at fair value on a recurring basis at December 31, 2016 were as follows:



	Level 1		Level 2		Level 3		Total Fair Value
Cash equivalents:
Money market funds	$	86,236	$	—	$	—	$	86,236
Commercial paper	129,671		—		—		129,671
	215,907		—		—		215,907
Investments:
Corporate debt securities	57,788		81,344		—		139,132
Preferred stock	19,177		17,416		—		36,593
	76,965		98,760		—		175,725
Restricted investments:
Short-term bond	4,226		—		—		4,226
Money market fund	1,410		—		—		1,410
	5,636		—		—		5,636
	$	298,508	$	98,760	$	—	$	397,268

Money market funds, commercial paper, U.S. Treasury securities, certain preferred stocks and short-term bonds are measured based on quoted market prices in an active market and categorized within level 1 of the fair value hierarchy. Money market funds and commercial paper with a maturity date of ninety days or less from the date of purchase are classified as cash equivalents in the Company’s condensed consolidated balance sheets.

The Company’s corporate debt securities and certain preferred stocks are not traded on a nationally recognized exchange but rather are traded in the U.S. over-the-counter market where there is less trading activity and these are measured primarily using pricing data from external pricing services that report prices observed for recently executed market transactions. For these reasons, the Company has determined that corporate debt securities and certain preferred stocks are categorized as level 2 financial instruments since their fair values were determined from market inputs in an inactive market.

Restricted investments include certain of the surplus assets that were transferred from the Company’s Pension Plan to a suspense account in the Company’s 401(k) Plan in December 2014. The Company has retained the risks and rewards of ownership of these assets; therefore, the assets held in the suspense account are included in the Company’s condensed consolidated financial statements until they are allocated to participants. As of September 30, 2017 and December 31, 2016, the assets held in the suspense account were invested in Vanguard Money Market Funds, which invest in short-term, high quality securities or short-term U.S. government securities and seek to provide current income and preserve shareholders’ principal investment and a Vanguard Short-Term Bond Fund, which invests in money market instruments and short-term high quality bonds, including asset-backed, government, and investment grade corporate securities with an expected maturity of 0-3 years. The Vanguard Money Market Funds and Vanguard Short-Term Bond Fund are measured based on quoted market prices in an active market and categorized within level 1 of the fair value hierarchy. The Company’s Retirement Plan Investment Committee is responsible for investing decisions and allocation decisions of the suspense account. Refer to Note 14. Employee Benefit Plan.

Fair Value of Financial Instruments

The Company uses the following methods and assumptions in estimating fair value for financial instruments:


•	The fair value of the Company’s retained interest investments is based on the present value of the expected future cash flows at the effective yield.


•	The fair value of the investments held by special purpose entities - time deposit is based on the present value of future cash flows at the current market rate.


•	The fair value of the investments held by special purpose entities - U.S. Treasury securities are measured based on quoted market prices in an active market.


•	The fair value of the senior notes held by special purpose entity is based on the present value of future cash flows at the current market rate.

The carrying amount and fair value, measured on a nonrecurring basis, of the Company’s financial instruments were as follows:



	September 30, 2017					December 31, 2016
	Carrying value		Fair value		Level	Carrying value		Fair value		Level
Assets
Retained interest investments	$	11,012	$	13,951	3	$	10,635	$	13,669	3
Investments held by special purpose entities:
Time deposit	$	200,000	$	200,000	3	$	200,000	$	200,000	3
U.S. Treasury securities and cash equivalents	$	7,942	$	7,821	1	$	8,590	$	8,398	1
Liabilities
Senior notes held by special purpose entity	$	176,479	$	199,730	3	$	176,310	$	199,691	3

Retained Interest Investments

The Company has a beneficial interest in certain bankruptcy-remote qualified SPEs used in the installment sale monetization of certain sales of timberlands in 2007 and 2008. The SPEs’ assets are not available to satisfy the Company’s liabilities or obligations and the liabilities of the SPEs are not the Company’s liabilities or obligations. Therefore, the SPEs’ assets and liabilities are not consolidated in the Company’s condensed consolidated financial statements as of September 30, 2017 and December 31, 2016. The Company’s continuing involvement with the SPEs is the receipt of the net interest payments and the remaining principal of approximately $16.8 million to be received at the end of the installment notes’ fifteen year maturity period, in 2022 through 2024. The Company has a beneficial or retained interest investment related to these SPEs of $11.0 million and $10.6 million as of September 30, 2017 and December 31, 2016, respectively, recorded in other assets on the Company’s condensed consolidated balance sheets.

Investments and Senior Notes Held by Special Purpose Entities

In connection with a real estate sale in 2014, the Company received consideration including a $200.0 million fifteen-year installment note (the “Timber Note”) issued by Panama City Timber Finance Company, LLC. The Company contributed the Timber Note and assigned its rights as a beneficiary under a letter of credit to Northwest Florida Timber Finance, LLC. Northwest Florida Timber Finance, LLC monetized the Timber Note by issuing $180.0 million aggregate principal amount of its 4.8% Senior Secured Notes due in 2029 (the “Senior Notes”) at an issue price of 98.5% of face value to third party investors. The investments held by Panama City Timber Finance Company, LLC as of September 30, 2017, consist of a $200.0 million time deposit that, subsequent to April 2, 2014, pays interest at 4.0% and matures in March 2029, U.S. Treasuries of $7.5 million and cash of $0.4 million. The Senior Notes held by Northwest Florida Timber Finance, LLC as of September 30, 2017 consist of $176.5 million, net of the $3.5 million discount and debt issuance costs. Panama City Timber Finance Company, LLC and Northwest Florida Timber Finance, LLC are VIEs, which the Company consolidates as the primary beneficiary of each entity.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Claim Settlement Receivable	9 Months Ended
Claim Settlement Receivable	Sep. 30, 2017
Receivables [Abstract]
Claim Settlement Receivable	Claim Settlement Receivable On March 24, 2016, the Company entered into a full and final release agreement with BP p.l.c. and various related entities pursuant to which the Company, on its own behalf and on behalf of certain wholly owned subsidiaries, released any and all claims related to the Deepwater Horizon oil spill which occurred on April 20, 2010. In exchange for this release, the Company will receive $13.2 million from BP Exploration & Production Inc., a large portion of which will reimburse the Company for expenses incurred. In October 2017 and 2016, the Company received payments of $2.7 million and $5.0 million, respectively. The remaining settlement amount will be made in payments of $2.7 million due in October 2018 and 2019. The Company also received a guaranty of payments from BP North America Corporation Inc. As of March 24, 2016, the Company recorded the claim settlement receivable using an imputed interest rate of 3.0%, based on its best estimate of the prevailing market rates for the source of credit, resulting in an initial present value of $12.5 million and a discount of $0.7 million. $12.5 million of the claim settlement was recognized as other income in the Company’s condensed consolidated statements of income for the nine months ended September 30, 2016. The discount is being accreted over the term of the receivable using the effective interest method. Interest income for the three months ended September 30, 2017 and 2016 was $0.1 million. Interest income for the nine months ended September 30, 2017 and the period from March 24, 2016 to September 30, 2016 was $0.2 million.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Other Assets

9 Months Ended

Sep. 30, 2017

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

Other assets consist of the following:



	September 30, 2017		December 31, 2016
Retained interest investments	$	11,012	$	10,635
Accounts receivable, net	7,551		4,625
Notes receivable, net	3,474		1,926
Prepaid expenses	7,105		5,685
Straight line rent	3,899		3,812
Other assets	6,524		8,789
Accrued interest receivable for Senior Notes held by SPE	935		2,938
Total other assets	$	40,500	$	38,410

Notes receivable, net consists of the following:



	September 30, 2017		December 31, 2016
Pier Park Community Development District notes, non-interest bearing, due September 2022	$	1,527	$	1,684
Interest bearing homebuilder note, secured by the real estate sold — 5.5% interest rate, principal payment of $0.1 million due September 2018 and any remaining amount outstanding is due by September 2019	904		—
Interest bearing homebuilder note, secured by the real estate sold — 5.5% interest rate, principal payment of $0.1 million due June 2018 and any remaining amount outstanding is due by June 2019	857		—
Interest bearing homebuilder notes, secured by the real estate sold — 4.0% interest rate, due December 2016, paid January 2017	—		33
Various mortgage notes, secured by certain real estate, bearing interest at various rates	186		209
Total notes receivable, net	$	3,474	$	1,926

The Company evaluates the carrying value of the notes receivable and the need for an allowance for doubtful notes receivable at each reporting date. As of September 30, 2017 and December 31, 2016, there was no allowance for doubtful notes receivable.

Real Estate Joint Ventures	9 Months Ended
Real Estate Joint Ventures	Sep. 30, 2017
Equity Method Investments and Joint Ventures [Abstract]
Real Estate Joint Ventures	Real Estate Joint Ventures The Company enters into real estate joint ventures, from time to time, for the purpose of developing real estate in which the Company may or may not have a controlling financial interest. GAAP requires consolidation of VIEs in which an enterprise has a controlling financial interest and is the primary beneficiary. A controlling financial interest will have both of the following characteristics: (a) the power to direct the VIE activities that most significantly impact economic performance and (b) the obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company examines specific criteria and uses judgment when determining whether the Company is the primary beneficiary and must consolidate a VIE. The Company continues to assess whether it is the primary beneficiary on an ongoing basis. Consolidated Real Estate Joint Ventures In April 2017, the Company entered into a joint venture agreement to develop, manage and lease apartments in Panama City Beach, Florida. The joint venture parties are working together to design, develop and construct a 240 unit multi-family apartment home community to be located on land owned by the Company in the Pier Park area. As of September 30, 2017 the Company owned a 65.0% equity interest in the consolidated joint venture. The Company’s partner is responsible for the day-to-day activities of the joint venture. However, the Company has significant involvement in the design of the development and approves all major decisions, including project development, annual budgets and financing. The Company determined Pier Park Crossings JV is a VIE and that the Company is the VIE’s primary beneficiary as of September 30, 2017. In December 2016, the Company entered into a joint venture agreement, pursuant to which the Company transferred to Windmark JV all of its interest in the Windmark Beach project. As of September 30, 2017 and December 31, 2016, the Company owned a 49.0% equity interest in the consolidated joint venture. A wholly owned subsidiary of the Company is the managing member of Windmark JV and runs its day-to-day operations. Windmark JV owns and its members make major decisions related to the management and development of the Windmark Beach project. For financial accounting purposes, the Company is deemed to control Windmark JV, which is consolidated within the financial results of the Company as of September 30, 2017 and December 31, 2016. During 2012, the Company entered into a joint venture agreement with a partner to develop a retail center at Pier Park North. As of September 30, 2017 and December 31, 2016, the Company owned a 60.0% equity interest in the consolidated joint venture. The Company’s partner is responsible for the day-to-day activities of the joint venture. However, the Company has significant involvement in the design of the development and approves all major decisions, including project development, annual budgets and financing. The Company determined the joint venture is a VIE and that the Company is the VIE’s primary beneficiary as of September 30, 2017 and December 31, 2016. In addition, the Company is the primary beneficiary of Artisan Park, L.L.C, another real estate joint venture that is consolidated within the financial results of the Company. The Company is entitled to 74.0% of the profit or loss of this VIE and is responsible for the day-to-day activities of the joint venture. Unconsolidated Real Estate VIE As of September 30, 2017 and December 31, 2016, the Company was a partner in ALP Liquidating Trust (“ALP”) that is accounted for using the equity method. The joint venture was entered into to develop and sell certain mixed use residential and commercial projects. In 2008, the Company wrote-off its investment in ALP as a result of ALP reserving its assets to satisfy potential claims and obligations in accordance with its publicly reported liquidation basis of accounting. Subsequently, ALP changed its method of accounting to a going concern basis and reinstated its equity and stated it would report certain expenses as they are incurred. The Company has not recorded any additional equity income as a result of ALP’s change in accounting. Financial information for ALP is provided to the Company on a delayed basis. The summarized information as of June 30, 2017 and December 31, 2016 includes total assets of $10.8 million and $11.5 million, respectively, total liabilities of $0.3 million and $0.6 million, respectively and total equity of $10.5 million and $10.9 million, respectively. For each of the three months ended June 30, 2017 and 2016, ALP reported a net loss of $0.2 million. For the six months ended June 30, 2017 and 2016, ALP reported a net loss of $0.4 million and $0.5 million, respectively.

Debt

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Debt

Debt consists of the following at September 30, 2017:



	Principal		Unamortized Discount and Debt Issuance Costs		Net
Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%	$	47,507	$	530	$	46,977
Community Development District debt, secured by certain real estate or other collateral, due May 2031 - May 2039, bearing interest at 3.4% to 7.0% at September 30, 2017	7,156		—		7,156
Construction loan, due March 2027, bearing interest at LIBOR plus 1.7% (effective rate of 2.9% at September 30, 2017)	1,624		19		1,605
Total debt	$	56,287	$	549	$	55,738

Debt consists of the following at December 31, 2016:



	Principal		Unamortized Discount and Debt Issuance Costs		Net
Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%	$	48,132	$	613	$	47,519
Community Development District debt, secured by certain real estate or other collateral, due May 2031 - May 2039, bearing interest at 3.4% to 7.0% at December 31, 2016	7,521		—		7,521
Total debt	$	55,653	$	613	$	55,040

In October 2015, the Pier Park North JV refinanced a construction loan by entering into a $48.2 million loan (the “Refinanced Loan”). As of September 30, 2017 and December 31, 2016, $47.5 million and $48.1 million, respectively, was outstanding on the Refinanced Loan. As of September 30, 2017 the Refinanced Loan was secured by a first lien on, and security interest in, a majority of the Pier Park North JV’s property and a remaining $1.3 million short term letter of credit. During October 2017, the letter of credit was released. In connection with the Refinanced Loan, the Company entered into a limited guarantee in favor of the lender, based on its percentage ownership of the joint venture. In addition, the guarantee can become full recourse in the case of any fraud or intentional misrepresentation by the Pier Park North JV; any voluntary transfer or encumbrance of the property in violation of the due-on-sale clause in the security instrument; upon commencement of voluntary bankruptcy or insolvency proceedings and upon breach of covenants in the security instrument.

Community Development District (“CDD”) bonds financed the construction of infrastructure improvements at some of the Company’s projects. The principal and interest payments on the bonds are paid by assessments on the properties benefited by the improvements financed by the bonds. The Company has recorded a liability for CDD debt that is associated with platted property, which is the point at which it becomes fixed or determinable. Additionally, the Company has recorded a liability for the portion of the CDD debt that is associated with unplatted property if it is probable and reasonably estimable that the Company will ultimately be responsible for repaying. The Company’s total outstanding CDD debt was $21.9 million and $22.6 million as of September 30, 2017 and December 31, 2016, respectively. The Company pays interest on the total outstanding CDD debt.

In March 2017, a wholly owned subsidiary of the Company entered into a $1.6 million construction loan to finance the construction of a commercial leasing property located in Panama City Beach, Florida (the “Construction Loan”). The Construction Loan provides for interest only payments during the first twelve months and principal and interest payments thereafter with a final balloon payment at maturity. The Construction Loan is secured by the real property, assignment of rents and the security interest in the rents and personal property. In connection with the Construction Loan, the Company executed a guarantee in favor of the lender to guarantee the payment and performance of the borrower under the Construction Loan until the project meets certain cash flow stabilization requirements.

The aggregate maturities of debt subsequent to September 30, 2017 are:



	September 30, 2017
2017	$	241
2018	1,493
2019	1,540
2020	1,543
2021	1,525
Thereafter	49,945
	$	56,287

Other Liabilities

9 Months Ended

Sep. 30, 2017

Payables and Accruals [Abstract]

Other Liabilities

Other liabilities consist of the following:



	September 30, 2017		December 31, 2016
Accounts payable	$	8,838	$	4,376
Accrued compensation	1,911		2,655
Deferred revenue	17,043		15,289
Membership deposits and initiation fees	9,328		7,384
Advance deposits	4,083		3,419
Other accrued liabilities	7,961		4,977
Accrued interest expense for Senior Notes held by SPE	712		2,850
Total other liabilities	$	49,876	$	40,950

Deferred revenue at September 30, 2017 and December 31, 2016 includes $12.5 million related to a 2006 agreement pursuant to which the Company agreed to sell land to the Florida Department of Transportation. Revenue is recognized when title to a specific parcel is legally transferred.

Membership deposits and initiation fees consist of deposits and fees received for club memberships. Initiation fees are recognized as revenue over the estimated average duration of membership, which is evaluated periodically.

Advance deposits consist of deposits received on hotel rooms and vacation rentals. Advance deposits are recorded as other liabilities in the condensed consolidated balance sheets without regard to whether they are refundable and are recognized as income at the time the service is provided for the related deposit.

Other accrued liabilities include $3.7 million of accrued property taxes as of September 30, 2017, which are generally paid annually in November. As of December 31, 2016 the Company had no accrued property taxes.

Income Taxes

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

Income tax expense differed from the amount computed by applying the federal statutory rate of 35% to pre-tax income or loss as a result of the following:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Tax at the federal statutory rate	$	3,005		$	1,280		$	11,167		$	6,424
State income taxes (net of federal benefit)	301			128			1,117			642
Tax effect of timber at the federal statutory rate of 23.8%	(194		)	(121		)	(420		)	(381		)
Decrease in valuation allowance	(250		)	(350		)	(846		)	(713		)
Other	(219		)	11			(187		)	(802		)
Total income tax expense	$	2,643		$	948		$	10,831		$	5,170

The Company had a federal AMT credit carryforward of $8.7 million and $13.5 million as of September 30, 2017 and December 31, 2016, respectively. The AMT credit carryforward is currently available indefinitely to offset future federal income tax liabilities. As of September 30, 2017 and December 31, 2016, the Company had state net operating loss carryforwards of $395.3 million and $427.3 million, respectively and no federal net operating loss carryforwards. The state net operating loss is available to offset future taxable income through 2036.

In general, a valuation allowance is recorded if, based on the available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. Realization of the Company’s deferred tax assets is dependent upon the Company generating sufficient taxable income in future years in the appropriate tax jurisdictions to obtain a benefit from the reversal of deductible temporary differences and from loss carryforwards.

As of December 31, 2016, based on the timing of reversal of future taxable amounts and the Company’s history of losses, management did not believe it met the requirements to realize the benefits of certain of its deferred tax assets; therefore, the Company had maintained a valuation allowance of $5.1 million. During the nine months ended September 30, 2017, the Company reversed $0.8 million of the valuation allowance that was recorded as of December 31, 2016. As of September 30, 2017, management believes it has not met the requirements to realize the benefits for a portion of its deferred tax assets for state net operating loss carryforwards; therefore, the Company has maintained a valuation allowance of $4.3 million for these deferred tax assets.

The Company had approximately $1.7 million of total unrecognized tax benefits as of both September 30, 2017 and December 31, 2016. Of this total, there are no amounts of unrecognized tax benefits that, if recognized, would affect the effective income tax rate. There were no decreases or increases related to prior year or current year tax positions.

In December 2016, the Company entered into a joint venture agreement, pursuant to which the Company sold to Windmark JV all of its interest in the Windmark Beach project. The sale of the Windmark Beach project created a net taxable loss for the Company in 2016. The loss was carried back to 2014 for a federal income tax refund of $21.9 million, which was received during the nine months ended September 30, 2017. In addition, the Company received a federal tax refund for 2016 of $4.4 million during the nine months ended September 30, 2017.

Accumulated Other Comprehensive (Loss) Income

9 Months Ended

Sep. 30, 2017

Stockholders' Equity Note [Abstract]

Accumulated Other Comprehensive (Loss) Income

Accumulated Other Comprehensive Income (Loss)

Following is a summary of the changes in the balances of accumulated other comprehensive income (loss), which is presented net of tax, as of September 30, 2017:



	Unrealized Gain and (Loss) on Available-for-Sale Securities
Accumulated other comprehensive income at December 31, 2016	$	2,507
Other comprehensive income before reclassifications	2,443
Amounts reclassified from accumulated other comprehensive loss	(6,141		)
Other comprehensive loss	(3,698		)
Accumulated other comprehensive loss at September 30, 2017	$	(1,191	)

Following is a summary of the tax effects allocated to other comprehensive (loss) income for the three months ended September 30, 2017 and 2016:



	Three Months Ended September 30, 2017
	Before-Tax Amount			Tax Benefit or (Expense)			Net-of-Tax Amount
Unrealized (loss) gain on investments:
Unrealized loss on available-for-sale investments	$	(683	)	$	263		$	(420	)
Unrealized gain on restricted investments	4			(2		)	2
Reclassification adjustment for loss included in earnings	104			(40		)	64
Reclassification adjustment for other-than-temporary impairment loss included in earnings	403			(296		)	107
Net unrealized loss	(172		)	(75		)	(247		)
Other comprehensive loss	$	(172	)	$	(75	)	$	(247	)



	Three Months Ended September 30, 2016
	Before-Tax Amount			Tax (Expense) or Benefit			Net-of-Tax Amount
Unrealized gain on investments:
Unrealized gain on available-for-sale investments	$	3,257		$	(1,253	)	$	2,004
Reclassification adjustment for gain included in earnings	(40		)	15			(25		)
Net unrealized gain	3,217			(1,238		)	1,979
Other comprehensive income	$	3,217		$	(1,238	)	$	1,979

Following is a summary of the tax effects allocated to other comprehensive (loss) income for the nine months ended September 30, 2017 and 2016:



	Nine Months Ended September 30, 2017
	Before-Tax Amount			Tax (Expense) or Benefit			Net-of-Tax Amount
Unrealized gain on investments:
Unrealized gain on available-for-sale investments	$	3,967		$	(1,526	)	$	2,441
Unrealized gain on restricted investments	4			(2		)	2
Reclassification adjustment for gain included in earnings	(10,757		)	4,143			(6,614		)
Reclassification adjustment for other-than-temporary impairment loss included in earnings	769			(296		)	473
Net unrealized loss	(6,017		)	2,319			(3,698		)
Other comprehensive loss	$	(6,017	)	$	2,319		$	(3,698	)



	Nine Months Ended September 30, 2016
	Before-Tax Amount			Tax (Expense) or Benefit			Net-of-Tax Amount
Unrealized gain on investments:
Unrealized gain on available-for-sale investments	$	3,259		$	(1,254	)	$	2,005
Reclassification adjustment for gain included in earnings	(40		)	15			(25		)
Net unrealized gain	3,219			(1,239		)	1,980
Other comprehensive income	$	3,219		$	(1,239	)	$	1,980

Stockholders' Equity	9 Months Ended
Stockholders' Equity	Sep. 30, 2017
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity Stock Repurchase Program During the nine months ended September 30, 2017 and 2016, the Company repurchased 7,811,937 and 995,650 shares, respectively, of its common stock at an average purchase price of $17.42 and $14.88, per share, respectively, for an aggregate purchase price of $136.0 million and $14.8 million, respectively, pursuant to its stock repurchase program (the “Stock Repurchase Program”). On July 7, 2017, the Company’s Board authorized additional repurchases of up to $28.0 million of the Company’s shares of its common stock under the Stock Repurchase Program. On July 11, 2017, the Company repurchased 1,500,000 shares for an aggregate purchase price of $27.0 million. On September 18, 2017, the Company’s Board authorized additional repurchase authority of up to $66.0 million of the Company’s shares of its common stock under the Stock Repurchase Program. On September 20, 2017, the Company repurchased 3,742,111 shares for an aggregate purchase price of $65.8 million. After giving effect to these and other recent repurchase activities, as of September 30, 2017, the Company has $147.7 million remaining under the Stock Repurchase Program. The Company may repurchase its common stock in open market purchases from time to time, in privately negotiated transactions or otherwise, pursuant to Rule 10b-18 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The timing and amount of any additional shares to be repurchased will depend upon a variety of factors, including market and business conditions and other factors. Repurchases may be commenced or suspended at any time or from time to time without prior notice. The Stock Repurchase Program will continue until otherwise modified or terminated by the Company’s Board at any time in its sole discretion. Issuance of Common Stock for Director’s Fees On May 25, 2017, the Company’s Board approved granting to each non-employee director an equity grant with an aggregate fair market value of $50,000 or, at the director’s election, its cash equivalent. On July 3, 2017, 5,334 shares of restricted stock were granted to two of the Company’s directors pursuant to the Board’s May 25th approval and the Company's 2015 Performance and Equity Incentive Plan. This restricted stock will vest on the date of the Company's 2018 Annual Meeting of Shareholders (the "Annual Meeting") and is subject to forfeiture upon termination of service on the Board prior to the Annual Meeting. Four non-employee directors elected to receive cash in lieu of the stock. On May 17, 2016, the Board approved the issuance of 8,919 restricted stock awards to three members of the Board as part of their 2016 compensation package and pursuant to the 2015 Performance and Equity Incentive Plan. These restricted stock awards vested 25% on the date of issue and 25% on August 17, 2016, November 17, 2016 and February 17, 2017. For each of the three and nine months ended September 30, 2017 and 2016, the Company recorded expense of less than $0.1 million, related to restricted stock awards to the Company’s directors.

Employee Benefit Plan	9 Months Ended
Employee Benefit Plan	Sep. 30, 2017
Retirement Benefits [Abstract]
Employee Benefit Plan	Employee Benefit Plan The Company maintains a 401(k) retirement plan covering substantially all officers and employees of the Company, which permits participants to defer up to the maximum allowable amount determined by the IRS of their eligible compensation. As part of the Pension Plan termination in 2014, the Company directed the Pension Plan to transfer $7.9 million of the Pension Plan’s surplus assets into a suspense account in the Company’s 401(k) Plan. The Company has retained the risks and rewards of ownership of these assets; therefore, the assets held in the suspense account are included in the Company’s condensed consolidated financial statements until they are allocated to participants. As of September 30, 2017 and December 31, 2016, the fair value of these assets was recorded in restricted investments on the Company’s condensed consolidated balance sheets and were $4.5 million and $5.6 million, respectively. The Company expenses the fair value of the assets at the time the assets are allocated to participants, which is expected to be allocated up to the next four years. During the nine months ended September 30, 2017 and 2016, the Company recorded an expense of $1.2 million and $1.4 million, respectively, for the fair value of the assets, less expenses, that were allocated to participants during that period. Any gain or loss on these assets is reflected in the Company’s condensed consolidated statements of income and was less than a $0.1 million gain for both the three and nine months ended September 30, 2017 and 2016. Refer to Note 5. Financial Instruments and Fair Value Measurements.

Other Income (Expense)

9 Months Ended

Sep. 30, 2017

Other Income and Expenses [Abstract]

Other Income (Expense)

Other income (expense) consists of the following:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Investment income, net
Net investment income from available-for-sale securities
Interest and dividend income	$	4,445		$	1,528		$	13,016		$	1,969
Accretion income	375			960			1,696			2,002
Realized (loss) gain on the sale of investments	(104		)	40			10,757			40
Other-than-temporary impairment loss	(403		)	—			(769		)	—
Total net investment income from available-for-sale securities	4,313			2,528			24,700			4,011
Interest income from investments in SPEs	2,050			2,051			6,151			6,151
Interest accrued on notes receivable and other interest	89			110			259			216
Total investment income, net	6,452			4,689			31,110			10,378
Interest expense
Interest expense and amortization of discount and issuance costs for Senior Notes issued by SPE	(2,195		)	(2,259		)	(6,582		)	(6,640		)
Other interest expense	(843		)	(816		)	(2,535		)	(2,615		)
Total interest expense	(3,038		)	(3,075		)	(9,117		)	(9,255		)
Claim settlement	—			—			—			12,548
Other income, net
Accretion income from retained interest investments	279			249			813			733
Hunting lease income	145			138			424			415
Miscellaneous income, net	493			48			4,323			339
Other income, net	917			435			5,560			1,487

Total other income, net	$	4,331		$	2,049		$	27,553		$	15,158

Investment Income, Net

Interest and dividend income includes interest income accrued or received on the Company’s corporate debt securities and dividend income received from the Company’s preferred stock and other investments. Accretion income includes the amortization of the premium or accretion of discount related to the Company’s available-for-sale securities, which is amortized based on an effective interest rate method over the term of the available-for-sale securities. Realized (loss) gain on the sale of investments include the loss or gain recognized on the sale of an available-for-sale security prior to maturity. During the three months ended September 30, 2017, the Company determined that a portion of its investments in corporate debt securities were other-than-temporarily impaired and recorded a $0.4 million impairment related to credit-related loss in investment income, net on the Company's condensed consolidated statements of income. During the nine months ended September 30, 2017, the Company determined that a portion of its investments in corporate debt securities and preferred stock were other-than-temporarily impaired and recorded a $0.8 million impairment related to credit-related loss in investment income, net on the Company's condensed consolidated statements of income. See Note 4. Investments.

Interest income from investments in SPEs primarily includes interest accrued or received on the investments held by Panama City Timber Finance Company, LLC, which is used to pay the interest expense for Senior Notes held by Northwest Florida Timber Finance, LLC.

Interest Expense

Interest expense includes interest expense related to the Company’s CDD debt, Refinanced Loan in the Pier Park North JV and Construction Loan. Borrowing costs, including the discount and issuance costs for the Senior Notes issued by Northwest Florida Timber Finance, LLC, are amortized based on the effective interest method at an effective rate of 4.9%.

Claim Settlement

Claim settlement during the nine months ended September 30, 2016 includes $12.5 million for a settlement related to the Deepwater Horizon oil spill. See Note 6. Claim Settlement Receivable for further discussion.

Other Income, Net

Other income, net primarily includes income from the Company’s retained interest investments, hunting lease income, insurance settlement proceeds and other income and expense items. During the nine months ended September 30, 2017, the Company negotiated an insurance settlement that resulted in proceeds of $3.5 million, for reimbursement of certain attorney fees and related costs incurred by the Company in defending shareholder litigation and the SEC investigation which was resolved in October 2015. This amount was included in other income, net in the condensed consolidated statements of income.

The Company records the accretion of investment income from its retained interest investment over the life of the retained interest using the effective yield method with rates ranging from 3.7% to 11.7%. Hunting lease income is recognized as income over the term of each lease.

Segment Information

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Segment Information

The Company conducts primarily all of its business in the following five reportable operating segments: (1) residential real estate, (2) commercial real estate, (3) resorts and leisure, (4) leasing and (5) forestry.

The residential real estate segment generates revenue from the development and sale of homes and homesites and the sale of parcels of entitled, undeveloped land. The commercial real estate segment sells undeveloped or developed land and commercial operating property. The resort and leisure segment generates revenue and incurs costs from the WaterColor Inn and Resort, the vacation rental program, management of The Pearl Hotel, membership sales, membership reservations, restaurants, four golf courses, a beach club, marina operations and other related resort activities. The leasing segment generates revenue and costs from leasing retail, office and commercial property, cell towers and other assets. Leasing operations include properties located in the Company’s Beckrich Office Park, consolidated Pier Park North JV and Windmark JV, as well as the Company’s industrial park, VentureCrossings and other properties. The forestry segment produces and sells pulpwood, sawtimber and other forest products and may sell the Company’s timber or rural land holdings.

The Company’s reportable segments are strategic business units that offer different products and services. They are each managed separately and decisions about allocations of resources are determined by management based on these strategic business units.

The Company uses income before income taxes and non-controlling interest for purposes of making decisions about allocating resources to each segment and assessing each segment’s performance, which the Company believes represents current performance measures.

The accounting policies of the segments are set forth in Note 2 to the Company’s consolidated financial statements contained in Item 15 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. Total revenue represents sales to unaffiliated customers, as reported in the Company’s condensed consolidated statements of income. All significant intercompany accounts and transactions have been eliminated in consolidation. The caption entitled “Other” consists of mitigation credit and title fee revenue and non-allocated corporate general and administrative expenses, net of investment income.

Information by business segment is as follows:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Operating revenue:
Residential real estate	$	9,411		$	3,122		$	15,391		$	15,905
Commercial real estate	446			631			2,624			631
Resorts and leisure	18,198			19,046			45,633			47,590
Leasing operations	2,847			2,655			7,884			7,336
Forestry	2,562			1,509			5,236			5,233
Other	190			229			467			302
Total operating revenue	$	33,654		$	27,192		$	77,235		$	76,997

Income (loss) before income taxes:
Residential real estate	$	1,802		$	237		$	3,026		$	4,676
Commercial real estate	(466		)	(496		)	(1,115		)	(1,644		)
Resorts and leisure	2,916			2,420			4,521			3,414
Leasing operations	302			454			814			75
Forestry	2,437			1,282			4,808			4,376
Other	1,793			(253		)	19,720			7,103
Total income before income taxes	$	8,784		$	3,644		$	31,774		$	18,000



	September 30, 2017		December 31, 2016
Total Assets:
Residential real estate	$	115,758	$	112,220
Commercial real estate	58,134		60,150
Resorts and leisure	77,000		73,436
Leasing operations	107,986		80,863
Forestry	20,089		20,664
Other	540,719		680,612
Total assets	$	919,686	$	1,027,945

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company establishes an accrued liability when it believes it is both probable that a material loss has been incurred and the amount of the loss can be reasonably estimated. The Company will evaluate the range of reasonably estimated losses and record an accrued liability based on what it believes to be the minimum amount in the range, unless it believes an amount within the range is a better estimate than any other amount. In such cases, there may be an exposure to loss in excess of the amounts accrued. The Company evaluates quarterly whether further developments could affect the amount of the accrued liability previously established or would make a loss contingency both probable and reasonably estimable. The Company also provides disclosure when it believes it is reasonably possible that a material loss will be incurred or when it believes it is reasonably possible that the amount of a loss will exceed the recorded liability. The Company reviews loss contingencies at least quarterly to determine whether the likelihood of loss has changed and to assess whether a reasonable estimate of the losses or range of loss can be made. This estimated range of possible losses is based upon currently available information and is subject to significant judgment and a variety of assumptions, as well as known and unknown uncertainties. The matters underlying the estimated range will change from time to time, and actual results may vary significantly from the current estimate. The Company is subject to a variety of litigation, claims, other disputes and governmental proceedings that arise from time to time in the ordinary course of its business, including litigation related to its prior homebuilding and development activities. The Company cannot assure that it will be successful in defending these matters. Based on current knowledge, the Company does not believe that loss contingencies arising from pending litigation, claims, other disputes and governmental proceedings, including those described herein, will have a material adverse effect on the consolidated financial position or liquidity of the Company. However, in light of the inherent uncertainties involved in these matters, an adverse outcome in one or more of these matters could be material to the Company’s results of operations or cash flows for any particular reporting period. The Company is subject to costs arising out of environmental laws and regulations, which include obligations to remove or limit the effects on the environment of the disposal or release of certain wastes or substances at various sites, including sites which have been previously sold. It is the Company’s policy to accrue and charge against earnings environmental cleanup costs when it is probable that a liability has been incurred and a range of loss can be reasonably estimated. As assessments and cleanups proceed, these accruals are reviewed and adjusted, if necessary, as additional information becomes available. The Company is in the process of assessing certain properties in regard to the effects, if any, on the environment from the disposal or release of wastes or substances. Management is unable to quantify future rehabilitation costs above present accruals at this time or provide a reasonably estimated range of loss. Other litigation, claims, disputes and governmental proceedings, including environmental matters, are pending against the Company. Accrued aggregate liabilities related to the matters described above and other litigation matters were $1.2 million and $1.3 million as of September 30, 2017 and December 31, 2016, respectively. Significant judgment is required in both the determination of probability and the determination as to whether the amount of an exposure is reasonably estimable. Due to uncertainties related to these matters, accruals are based only on the information available at the time. As additional information becomes available, management reassesses potential liabilities related to pending claims and litigation and may revise its previous estimates, which could materially affect the Company's results of operations in a given period. The Company has retained certain self-insurance risks with respect to losses for third party liability and property damage, including its timber assets. At September 30, 2017 and December 31, 2016, the Company was required to provide surety bonds that guarantee completion of certain infrastructure in certain development projects and mitigation banks of $8.6 million and $6.2 million, respectively, and standby letters of credit of less than $0.1 million and $0.4 million, respectively, which may potentially result in liability to the Company if certain obligations of the Company are not met. As of September 30, 2017, the Company had a total of $14.1 million in contractual obligations, of which $12.0 million are for the remainder of 2017, $2.0 million are for 2018 and $0.1 million are for 2019. As of September 30, 2017, security on the Refinanced Loan includes a remaining short term $1.3 million letter of credit, which was released during October 2017. See Note 9. Debt for a further discussion on the Refinanced Loan.

Summary of Significant Accounting Policies - (Policies)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Use of Estimates

Cash and Cash Equivalents

Cash and cash equivalents include cash on hand, bank demand accounts, money market instruments and short term commercial paper having original maturities, at acquisition date, of ninety days or less.

Investments

Restricted Investments

Fair Value Measurements

Level 1. Quoted prices in active markets for identical assets or liabilities;

Level 2. Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and

Level 3. Unobservable inputs in which there is little or no market data, such as internally-developed valuation models which require the reporting entity to develop its own assumptions.

Long-Lived Assets


•	a prolonged decrease in the fair value or demand for the Company’s properties;


•	a change in the expected use or development plans for the Company’s properties;


•	a material change in strategy that would affect the fair value of the Company’s properties;


•	continuing operating or cash flow loss for an operating property;


•	an accumulation of costs in excess of the projected costs for a development property; and


•	any other adverse change that may affect the fair value of the property.

Comprehensive Income

The Company’s comprehensive income includes unrealized gains and temporary losses on available-for-sale securities and restricted investments.

Income Taxes

Concentration of Risks and Uncertainties

Earnings Per Share

Basic and diluted earnings per share is calculated by dividing net income by the average number of common shares outstanding for the period.

Revenue and Revenue Recognition

Real Estate Revenue

Resorts and Leisure Revenue

Leasing Revenue

Forestry Product Revenue

Recently Adopted and Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

Revenue Recognition

Financial Instruments

Leases

Financial Instruments - Credit Losses

Statement of Cash Flows

Statement of Cash Flows - Restricted Cash

Investment in Real Estate - (Tables)

9 Months Ended

Sep. 30, 2017

Real Estate [Abstract]

Real estate by property type and segment

Real estate by property type and segment includes the following:



	September 30, 2017		December 31, 2016
Development property:
Residential real estate	$	101,697	$	101,292
Commercial real estate	55,060		56,073
Resorts and leisure	2,489		263
Leasing operations	18,582		2,291
Forestry	2,488		2,492
Corporate	2,530		2,438
Total development property	182,846		164,849

Operating property:
Residential real estate	7,344		8,097
Resorts and leisure	105,860		107,029
Leasing operations	92,768		82,336
Forestry	19,357		19,608
Other	50		50
Total operating property	225,379		217,120
Less: Accumulated depreciation	70,716		67,349
Total operating property, net	154,663		149,771
Investment in real estate, net	$	337,509	$	314,620

Investments - (Tables)

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

At September 30, 2017, investments and restricted investments classified as available-for-sale securities were as follows:



	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
Investments:
U.S. Treasury securities	$	9,995	$	1	$	—	$	9,996
Corporate debt securities	103,251		778		2,522		101,507
Preferred stock	33,923		708		898		33,733
	147,169		1,487		3,420		145,236
Restricted investments:
Short-term bond	4,239		6		—		4,245
Money market funds	217		—		—		217
	4,456		6		—		4,462
	$	151,625	$	1,493	$	3,420	$	149,698

At December 31, 2016, investments and restricted investments classified as available-for-sale securities were as follows:



	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
Investments:
Corporate debt securities	$	135,590	$	5,311	$	1,769	$	139,132
Preferred stock	36,048		656		111		36,593
	171,638		5,967		1,880		175,725
Restricted investments:
Short-term bond	4,232		—		6		4,226
Money market fund	1,410		—		—		1,410
	5,642		—		6		5,636
	$	177,280	$	5,967	$	1,886	$	181,361

Continuous Unrealized Loss Position

The following table provides the corporate debt securities, preferred stock and restricted investments unrealized loss position and related fair values:



	As of September 30, 2017								As of December 31, 2016
	Less Than 12 Months				12 Months or Greater				Less Than 12 Months				12 Months or Greater
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investments:
Corporate debt securities	42,178		2,034		28,142		488		64,516		1,410		6,971		359
Preferred stock	11,729		871		169		27		—		—		153		111
Restricted investments:
Short-term bond	—		—		—		—		4,226		6		—		—
	$	53,907	$	2,905	$	28,311	$	515	$	68,742	$	1,416	$	7,124	$	470

Contractual Maturities of Investments



	Amortized Cost		Fair Value
Due in one year or less	$	13,974	$	13,944
Due after one year through five years	95,423		93,476
Due after five year through ten years	3,757		4,025
Due after ten years through fifteen years	92		58
	113,246		111,503
Preferred stock	33,923		33,733
Restricted investments	4,456		4,462
	$	151,625	$	149,698

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Financial Instruments and Fair Value Measurements - (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis

The financial instruments measured at fair value on a recurring basis at September 30, 2017 were as follows:



	Level 1		Level 2		Level 3		Total Fair Value
Cash equivalents:
Money market funds	$	5,947	$	—	$	—	$	5,947
Commercial paper	141,618		—		—		141,618
	147,565		—		—		147,565
Investments:
U.S. Treasury securities	9,996		—		—		9,996
Corporate debt securities	—		101,507		—		101,507
Preferred stock	10,903		22,830		—		33,733
	20,899		124,337		—		145,236
Restricted investments:
Short-term bond	4,245		—		—		4,245
Money market fund	217		—		—		217
	4,462		—		—		4,462
	$	172,926	$	124,337	$	—	$	297,263

The financial instruments measured at fair value on a recurring basis at December 31, 2016 were as follows:



	Level 1		Level 2		Level 3		Total Fair Value
Cash equivalents:
Money market funds	$	86,236	$	—	$	—	$	86,236
Commercial paper	129,671		—		—		129,671
	215,907		—		—		215,907
Investments:
Corporate debt securities	57,788		81,344		—		139,132
Preferred stock	19,177		17,416		—		36,593
	76,965		98,760		—		175,725
Restricted investments:
Short-term bond	4,226		—		—		4,226
Money market fund	1,410		—		—		1,410
	5,636		—		—		5,636
	$	298,508	$	98,760	$	—	$	397,268

Carrying Amount and Fair Value of Financial Instruments

The carrying amount and fair value, measured on a nonrecurring basis, of the Company’s financial instruments were as follows:



	September 30, 2017					December 31, 2016
	Carrying value		Fair value		Level	Carrying value		Fair value		Level
Assets
Retained interest investments	$	11,012	$	13,951	3	$	10,635	$	13,669	3
Investments held by special purpose entities:
Time deposit	$	200,000	$	200,000	3	$	200,000	$	200,000	3
U.S. Treasury securities and cash equivalents	$	7,942	$	7,821	1	$	8,590	$	8,398	1
Liabilities
Senior notes held by special purpose entity	$	176,479	$	199,730	3	$	176,310	$	199,691	3

Other Assets - (Tables)

9 Months Ended

Sep. 30, 2017

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Assets

Other assets consist of the following:



	September 30, 2017		December 31, 2016
Retained interest investments	$	11,012	$	10,635
Accounts receivable, net	7,551		4,625
Notes receivable, net	3,474		1,926
Prepaid expenses	7,105		5,685
Straight line rent	3,899		3,812
Other assets	6,524		8,789
Accrued interest receivable for Senior Notes held by SPE	935		2,938
Total other assets	$	40,500	$	38,410

Schedule of Notes Receivable, net

Notes receivable, net consists of the following:



	September 30, 2017		December 31, 2016
Pier Park Community Development District notes, non-interest bearing, due September 2022	$	1,527	$	1,684
Interest bearing homebuilder note, secured by the real estate sold — 5.5% interest rate, principal payment of $0.1 million due September 2018 and any remaining amount outstanding is due by September 2019	904		—
Interest bearing homebuilder note, secured by the real estate sold — 5.5% interest rate, principal payment of $0.1 million due June 2018 and any remaining amount outstanding is due by June 2019	857		—
Interest bearing homebuilder notes, secured by the real estate sold — 4.0% interest rate, due December 2016, paid January 2017	—		33
Various mortgage notes, secured by certain real estate, bearing interest at various rates	186		209
Total notes receivable, net	$	3,474	$	1,926

Debt - (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Debt

Debt consists of the following at September 30, 2017:



	Principal		Unamortized Discount and Debt Issuance Costs		Net
Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%	$	47,507	$	530	$	46,977
Community Development District debt, secured by certain real estate or other collateral, due May 2031 - May 2039, bearing interest at 3.4% to 7.0% at September 30, 2017	7,156		—		7,156
Construction loan, due March 2027, bearing interest at LIBOR plus 1.7% (effective rate of 2.9% at September 30, 2017)	1,624		19		1,605
Total debt	$	56,287	$	549	$	55,738

Debt consists of the following at December 31, 2016:



	Principal		Unamortized Discount and Debt Issuance Costs		Net
Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%	$	48,132	$	613	$	47,519
Community Development District debt, secured by certain real estate or other collateral, due May 2031 - May 2039, bearing interest at 3.4% to 7.0% at December 31, 2016	7,521		—		7,521
Total debt	$	55,653	$	613	$	55,040

Maturities of Debt

The aggregate maturities of debt subsequent to September 30, 2017 are:



	September 30, 2017
2017	$	241
2018	1,493
2019	1,540
2020	1,543
2021	1,525
Thereafter	49,945
	$	56,287

Income Taxes - (Tables)

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Schedule of effective income tax rate reconciliation

Income tax expense differed from the amount computed by applying the federal statutory rate of 35% to pre-tax income or loss as a result of the following:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Tax at the federal statutory rate	$	3,005		$	1,280		$	11,167		$	6,424
State income taxes (net of federal benefit)	301			128			1,117			642
Tax effect of timber at the federal statutory rate of 23.8%	(194		)	(121		)	(420		)	(381		)
Decrease in valuation allowance	(250		)	(350		)	(846		)	(713		)
Other	(219		)	11			(187		)	(802		)
Total income tax expense	$	2,643		$	948		$	10,831		$	5,170

Accumulated Other Comprehensive (Loss) Income - (Tables)

9 Months Ended

Sep. 30, 2017

Stockholders' Equity Note [Abstract]

Summary of Changes in Accumulated Other Comprehensive (Loss) Income

Following is a summary of the changes in the balances of accumulated other comprehensive income (loss), which is presented net of tax, as of September 30, 2017:



	Unrealized Gain and (Loss) on Available-for-Sale Securities
Accumulated other comprehensive income at December 31, 2016	$	2,507
Other comprehensive income before reclassifications	2,443
Amounts reclassified from accumulated other comprehensive loss	(6,141		)
Other comprehensive loss	(3,698		)
Accumulated other comprehensive loss at September 30, 2017	$	(1,191	)

Reclassification out of Accumulated Other Comprehensive (Loss) Income

Following is a summary of the tax effects allocated to other comprehensive (loss) income for the three months ended September 30, 2017 and 2016:



	Three Months Ended September 30, 2017
	Before-Tax Amount			Tax Benefit or (Expense)			Net-of-Tax Amount
Unrealized (loss) gain on investments:
Unrealized loss on available-for-sale investments	$	(683	)	$	263		$	(420	)
Unrealized gain on restricted investments	4			(2		)	2
Reclassification adjustment for loss included in earnings	104			(40		)	64
Reclassification adjustment for other-than-temporary impairment loss included in earnings	403			(296		)	107
Net unrealized loss	(172		)	(75		)	(247		)
Other comprehensive loss	$	(172	)	$	(75	)	$	(247	)



	Three Months Ended September 30, 2016
	Before-Tax Amount			Tax (Expense) or Benefit			Net-of-Tax Amount
Unrealized gain on investments:
Unrealized gain on available-for-sale investments	$	3,257		$	(1,253	)	$	2,004
Reclassification adjustment for gain included in earnings	(40		)	15			(25		)
Net unrealized gain	3,217			(1,238		)	1,979
Other comprehensive income	$	3,217		$	(1,238	)	$	1,979

Following is a summary of the tax effects allocated to other comprehensive (loss) income for the nine months ended September 30, 2017 and 2016:



	Nine Months Ended September 30, 2017
	Before-Tax Amount			Tax (Expense) or Benefit			Net-of-Tax Amount
Unrealized gain on investments:
Unrealized gain on available-for-sale investments	$	3,967		$	(1,526	)	$	2,441
Unrealized gain on restricted investments	4			(2		)	2
Reclassification adjustment for gain included in earnings	(10,757		)	4,143			(6,614		)
Reclassification adjustment for other-than-temporary impairment loss included in earnings	769			(296		)	473
Net unrealized loss	(6,017		)	2,319			(3,698		)
Other comprehensive loss	$	(6,017	)	$	2,319		$	(3,698	)



	Nine Months Ended September 30, 2016
	Before-Tax Amount			Tax (Expense) or Benefit			Net-of-Tax Amount
Unrealized gain on investments:
Unrealized gain on available-for-sale investments	$	3,259		$	(1,254	)	$	2,005
Reclassification adjustment for gain included in earnings	(40		)	15			(25		)
Net unrealized gain	3,219			(1,239		)	1,980
Other comprehensive income	$	3,219		$	(1,239	)	$	1,980

Other Income (Expense) - (Tables)

9 Months Ended

Sep. 30, 2017

Other Income and Expenses [Abstract]

Schedule of other income (expense)

Other income (expense) consists of the following:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Investment income, net
Net investment income from available-for-sale securities
Interest and dividend income	$	4,445		$	1,528		$	13,016		$	1,969
Accretion income	375			960			1,696			2,002
Realized (loss) gain on the sale of investments	(104		)	40			10,757			40
Other-than-temporary impairment loss	(403		)	—			(769		)	—
Total net investment income from available-for-sale securities	4,313			2,528			24,700			4,011
Interest income from investments in SPEs	2,050			2,051			6,151			6,151
Interest accrued on notes receivable and other interest	89			110			259			216
Total investment income, net	6,452			4,689			31,110			10,378
Interest expense
Interest expense and amortization of discount and issuance costs for Senior Notes issued by SPE	(2,195		)	(2,259		)	(6,582		)	(6,640		)
Other interest expense	(843		)	(816		)	(2,535		)	(2,615		)
Total interest expense	(3,038		)	(3,075		)	(9,117		)	(9,255		)
Claim settlement	—			—			—			12,548
Other income, net
Accretion income from retained interest investments	279			249			813			733
Hunting lease income	145			138			424			415
Miscellaneous income, net	493			48			4,323			339
Other income, net	917			435			5,560			1,487

Total other income, net	$	4,331		$	2,049		$	27,553		$	15,158

Segment Information - (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Information by Business Segment

Information by business segment is as follows:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Operating revenue:
Residential real estate	$	9,411		$	3,122		$	15,391		$	15,905
Commercial real estate	446			631			2,624			631
Resorts and leisure	18,198			19,046			45,633			47,590
Leasing operations	2,847			2,655			7,884			7,336
Forestry	2,562			1,509			5,236			5,233
Other	190			229			467			302
Total operating revenue	$	33,654		$	27,192		$	77,235		$	76,997

Income (loss) before income taxes:
Residential real estate	$	1,802		$	237		$	3,026		$	4,676
Commercial real estate	(466		)	(496		)	(1,115		)	(1,644		)
Resorts and leisure	2,916			2,420			4,521			3,414
Leasing operations	302			454			814			75
Forestry	2,437			1,282			4,808			4,376
Other	1,793			(253		)	19,720			7,103
Total income before income taxes	$	8,784		$	3,644		$	31,774		$	18,000



	September 30, 2017		December 31, 2016
Total Assets:
Residential real estate	$	115,758	$	112,220
Commercial real estate	58,134		60,150
Resorts and leisure	77,000		73,436
Leasing operations	107,986		80,863
Forestry	20,089		20,664
Other	540,719		680,612
Total assets	$	919,686	$	1,027,945

Summary of Significant Accounting Policies - (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) issuer shares	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) issuer shares	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) shares
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
401(k) Plan distribution period (in years)			4 years
Impairment losses	$ 100	$ 400	$ 100	$ 400
U.S. Treasury securities	149,698		149,698		$ 181,361
Debt securities	$ 111,503		$ 111,503
Common stock equivalents \| shares	0		0		0
Property management fee, percent fee			50.00%
U.S. Treasury securities
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
U.S. Treasury securities	$ 9,996		$ 9,996
Corporate debt securities
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
U.S. Treasury securities	101,507		101,507		$ 139,132
Debt securities	101,500		101,500
Preferred stock
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
U.S. Treasury securities	33,733		33,733		$ 36,593
Preferred stock investments	$ 33,700		$ 33,700
Commercial paper
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of issuers \| issuer	9		9
Commercial paper	$ 141,600		$ 141,600
Non-investment grade \| Corporate debt securities
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Debt securities	$ 101,500		$ 101,500
Number of issuers \| issuer	8		8
Non-investment grade \| Preferred stock
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of issuers \| issuer	4		4
Preferred stock investments	$ 33,700		$ 33,700

Investment in Real Estate - Real Estate by Property Type and Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Real Estate Properties [Line Items]
Development property	$ 182,846	$ 164,849
Operating property	225,379	217,120
Less: Accumulated depreciation	70,716	67,349
Total operating property, net	154,663	149,771
Investment in real estate, net	337,509	314,620
Residential real estate
Real Estate Properties [Line Items]
Development property	101,697	101,292
Operating property	7,344	8,097
Commercial real estate
Real Estate Properties [Line Items]
Development property	55,060	56,073
Resorts and leisure
Real Estate Properties [Line Items]
Development property	2,489	263
Operating property	105,860	107,029
Leasing operations
Real Estate Properties [Line Items]
Development property	18,582	2,291
Operating property	92,768	82,336
Forestry
Real Estate Properties [Line Items]
Development property	2,488	2,492
Operating property	19,357	19,608
Other
Real Estate Properties [Line Items]
Operating property	50	50
Corporate
Real Estate Properties [Line Items]
Development property	$ 2,530	$ 2,438

Investments - Schedule of Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 151,625	$ 177,280
Gross Unrealized Gain	1,493	5,967
Gross Unrealized Loss	3,420	1,886
Fair Value	149,698	181,361
U.S. Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,995
Gross Unrealized Gain	1
Gross Unrealized Loss	0
Fair Value	9,996
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	103,251	135,590
Gross Unrealized Gain	778	5,311
Gross Unrealized Loss	2,522	1,769
Fair Value	101,507	139,132
Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	33,923	36,048
Gross Unrealized Gain	708	656
Gross Unrealized Loss	898	111
Fair Value	33,733	36,593
Debt and equity investments
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	147,169	171,638
Gross Unrealized Gain	1,487	5,967
Gross Unrealized Loss	3,420	1,880
Fair Value	145,236	175,725
Short-term bond
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,239	4,232
Gross Unrealized Gain	6	0
Gross Unrealized Loss	0	6
Fair Value	4,245	4,226
Money market funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	217	1,410
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Fair Value	217	1,410
Restricted investments
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,456	5,642
Gross Unrealized Gain	6	0
Gross Unrealized Loss	0	6
Fair Value	$ 4,462	$ 5,636

Investments - Narrative (Details)	3 Months Ended		9 Months Ended
Investments - Narrative (Details)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) member	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 149,698,000		$ 149,698,000		$ 181,361,000
Number of Investment Committee Members Required to Authorize Investment \| member			2
Debt securities	111,503,000		$ 111,503,000
Available-for-sale securities, gross realized gain (loss)	(100,000)	$ 100,000	10,800,000	$ 100,000
Proceeds from sales of available-for-sale securities			144,300,000	83,300,000
Maturities of investments			0	185,000,000
Unrealized losses	3,420,000		3,420,000		1,886,000
Other-than-temporary impairment loss	403,000	$ 0	769,000	$ 0
U.S. Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Fair Value	9,996,000		9,996,000
Unrealized losses	0		0
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Fair Value	101,507,000		101,507,000		139,132,000
Debt securities	101,500,000		101,500,000
Unrealized losses	2,522,000		2,522,000		1,769,000
Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Fair Value	33,733,000		33,733,000		36,593,000
Preferred stock investments	33,700,000		33,700,000
Unrealized losses	898,000		898,000		$ 111,000
Sears Holdings Corp or affiliates \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Debt securities	9,200,000		9,200,000
Sears Holdings Corp or affiliates \| Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Preferred stock investments	$ 200,000		$ 200,000
Required percent of investment account held in cash or cash equivalents \| Minimum
Schedule of Available-for-sale Securities [Line Items]
Investments, target portfolio allocations			25.00%
Other aggregated investments \| Minimum \| Securities of any one issuer (excluding the U.S. Government)
Schedule of Available-for-sale Securities [Line Items]
Investments, portfolio allocations requiring additional consent			10.00%
Other aggregated investments \| Maximum \| Securities of any one issuer (excluding the U.S. Government)
Schedule of Available-for-sale Securities [Line Items]
Investments, target portfolio allocations			15.00%
Investments, portfolio allocations requiring additional consent			15.00%
Other aggregated investments \| Maximum \| Single Issuer, exchange-traded common equities
Schedule of Available-for-sale Securities [Line Items]
Investments, target portfolio allocations			5.00%
Common stock investments \| Maximum
Schedule of Available-for-sale Securities [Line Items]
Investments, target portfolio allocations, amount			$ 100,000,000.0
Common, preferred or other equity investments \| Maximum
Schedule of Available-for-sale Securities [Line Items]
Investments, target portfolio allocations			25.00%
Investor \| Fairholme Capital Management, L.L.C.
Schedule of Available-for-sale Securities [Line Items]
Common stock ownership percentage	40.58%		40.58%

Investments - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	$ 53,907	$ 68,742
Less Than 12 Months, Unrealized Losses	2,905	1,416
12 Months or Greater, Fair Value	28,311	7,124
12 Months or Greater, Unrealized Losses	515	470
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	42,178	64,516
Less Than 12 Months, Unrealized Losses	2,034	1,410
12 Months or Greater, Fair Value	28,142	6,971
12 Months or Greater, Unrealized Losses	488	359
Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	11,729	0
Less Than 12 Months, Unrealized Losses	871	0
12 Months or Greater, Fair Value	169	153
12 Months or Greater, Unrealized Losses	27	111
Short-term bond
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	0	4,226
Less Than 12 Months, Unrealized Losses	0	6
12 Months or Greater, Fair Value	0	0
12 Months or Greater, Unrealized Losses	$ 0	$ 0

Investments - Contractual Maturities of Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost
Due in one year or less	$ 13,974
Due after one year through five years	95,423
Due after five year through ten years	3,757
Due after ten years through fifteen years	92
Amortized Cost	113,246
Amortized Cost	151,625	$ 177,280
Fair Value
Due in one year or less	13,944
Due after one year through five years	93,476
Due after five year through ten years	4,025
Due after ten years through fifteen years	58
Fair Value	111,503
Fair Value	149,698	181,361
Preferred stock
Amortized Cost
Securities without maturity date, amortized cost	33,923
Amortized Cost	33,923	36,048
Fair Value
Securities without maturity date, fair value	33,733
Fair Value	33,733	36,593
Restricted investments
Amortized Cost
Securities without maturity date, amortized cost	4,456
Amortized Cost	4,456	5,642
Fair Value
Securities without maturity date, fair value	4,462
Fair Value	$ 4,462	$ 5,636

Financial Instruments and Fair Value Measurements - Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	$ 4,462	$ 5,636
Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	147,565	215,907
Investments	145,236	175,725
Restricted investments	4,462	5,636
Total Fair Value	297,263	397,268
Fair value, measurements, recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	147,565	215,907
Investments	20,899	76,965
Restricted investments	4,462	5,636
Total Fair Value	172,926	298,508
Fair value, measurements, recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Investments	124,337	98,760
Restricted investments	0	0
Total Fair Value	124,337	98,760
Fair value, measurements, recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Investments	0	0
Restricted investments	0	0
Total Fair Value	0	0
Fair value, measurements, recurring \| Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	5,947	86,236
Restricted investments	217	1,410
Fair value, measurements, recurring \| Money market funds \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	5,947	86,236
Restricted investments	217	1,410
Fair value, measurements, recurring \| Money market funds \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Restricted investments	0	0
Fair value, measurements, recurring \| Money market funds \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Restricted investments	0	0
Fair value, measurements, recurring \| Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	141,618	129,671
Fair value, measurements, recurring \| Commercial paper \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	141,618	129,671
Fair value, measurements, recurring \| Commercial paper \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Fair value, measurements, recurring \| Commercial paper \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Fair value, measurements, recurring \| U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	9,996
Fair value, measurements, recurring \| U.S. Treasury securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	9,996
Fair value, measurements, recurring \| U.S. Treasury securities \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Fair value, measurements, recurring \| U.S. Treasury securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Fair value, measurements, recurring \| Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	101,507	139,132
Fair value, measurements, recurring \| Corporate debt securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	57,788
Fair value, measurements, recurring \| Corporate debt securities \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	101,507	81,344
Fair value, measurements, recurring \| Corporate debt securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Fair value, measurements, recurring \| Preferred stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	33,733	36,593
Fair value, measurements, recurring \| Preferred stock \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	10,903	19,177
Fair value, measurements, recurring \| Preferred stock \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	22,830	17,416
Fair value, measurements, recurring \| Preferred stock \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Fair value, measurements, recurring \| Short-term bond
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	4,245	4,226
Fair value, measurements, recurring \| Short-term bond \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	4,245	4,226
Fair value, measurements, recurring \| Short-term bond \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	0	0
Fair value, measurements, recurring \| Short-term bond \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	$ 0	$ 0

Financial Instruments and Fair Value Measurements - Narrative (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Retained interest promissory note receivable	$ 16,800,000
Notes, maturity period	15 years
Debt principal amount			$ 180,000,000.0
Debt interest rate			4.80%
Senior notes held by special purpose entity	$ 176,479,000	$ 176,310,000
Carrying Value \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Retained interest, fair value	11,012,000	10,635,000
Senior notes held by special purpose entity	176,479,000	$ 176,310,000
AgReserves Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Note received in sale of real estate			$ 200,000,000
Maturity of installment note			15 years
Subsidiaries \| Notes Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Issue price of senior secured notes			98.50%
Special Purpose Entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Time deposits held by special purpose entities	200,000,000.0
U.S. Treasury securities	7,500,000
Cash held by special purpose entities	$ 400,000
Special Purpose Entities \| Notes Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt interest rate	4.00%
Northwest Florida Timber Finance, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes held by special purpose entity	$ 176,500,000
Unamortized discount and debt issuance costs	$ 3,500,000
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Note maturity year	2022
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Note maturity year	2024
Short-term bond \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value assumptions, expected term	0 years	0 years
Short-term bond \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value assumptions, expected term	3 years	3 years

Financial Instruments and Fair Value Measurements - Carrying Amount and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes held by special purpose entity	$ 176,479	$ 176,310
Carrying Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Retained interest investments	11,012	10,635
Time deposit	200,000	200,000
Senior notes held by special purpose entity	176,479	176,310
Carrying Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
U.S. Treasury securities and cash equivalents	7,942	8,590
Fair Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Retained interest investments	13,951	13,669
Time deposit	200,000	200,000
Senior notes held by special purpose entity	199,730	199,691
Fair Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
U.S. Treasury securities and cash equivalents	$ 7,821	$ 8,398

Claim Settlement Receivable - (Details) - USD ($) $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended	9 Months Ended
	Mar. 24, 2016	Oct. 31, 2017	Oct. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Receivables with Imputed Interest [Line Items]
Litigation settlement receivable				$ 7,982			$ 7,982		$ 7,804
Litigation settlement gain (loss)				0	$ 0		0	$ 12,548
BP Exploration & Production Inc.
Receivables with Imputed Interest [Line Items]
Litigation settlement receivable, gross	$ 13,200
Litigation settlement receivable	12,500
Litigation settlement amount received			$ 5,000
Litigation settlement receivable due in October 2017, 2018 and 2019	$ 2,700
Imputed interest rate on litigation settlement receivable	3.00%
Unamortized discount	$ 700
Interest income				$ 100	$ 100	$ 200	$ 200
Other income \| BP Exploration & Production Inc.
Receivables with Imputed Interest [Line Items]
Litigation settlement gain (loss)								$ 12,500
Subsequent Event \| BP Exploration & Production Inc.
Receivables with Imputed Interest [Line Items]
Litigation settlement amount received		$ 2,700

Other Assets - (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Retained interest investments	$ 11,012	$ 10,635
Accounts receivable, net	7,551	4,625
Notes receivable, net	3,474	1,926
Prepaid expenses	7,105	5,685
Straight line rent	3,899	3,812
Other assets	6,524	8,789
Accrued interest receivable for Senior Notes held by SPE	935	2,938
Total other assets	$ 40,500	$ 38,410

Other Assets - Notes Receivable, Net (Details) - USD ($)	1 Months Ended
	Jan. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Notes receivable, net		$ 3,474,000	$ 1,926,000
Mortgage loans on real estate, collections of principal	$ 33,000
Notes receivable, allowance		0	0
Pier Park Community Development District notes, non-interest bearing, due September 2022
Loans and Leases Receivable Disclosure [Line Items]
Notes receivable, net		1,527,000	1,684,000
Interest bearing homebuilder note, secured by the real estate sold — 5.5% interest rate, principal payment of $0.1 million due September 2018 and any remaining amount outstanding is due by September 2019
Loans and Leases Receivable Disclosure [Line Items]
Notes receivable, net		$ 904,000	0
Mortgage loans on real estate, stated interest rate		5.50%
Mortgage loans on real estate, principal receivable		$ 100,000
Interest bearing homebuilder note, secured by the real estate sold — 5.5% interest rate, principal payment of $0.1 million due June 2018 and any remaining amount outstanding is due by June 2019
Loans and Leases Receivable Disclosure [Line Items]
Notes receivable, net		$ 857,000	0
Mortgage loans on real estate, stated interest rate		5.50%
Mortgage loans on real estate, principal receivable		$ 100,000
Interest bearing homebuilder notes, secured by the real estate sold — 4.0% interest rate, due December 2016, paid January 2017
Loans and Leases Receivable Disclosure [Line Items]
Notes receivable, net		0	$ 33,000
Mortgage loans on real estate, stated interest rate			4.00%
Various mortgage notes, secured by certain real estate, bearing interest at various rates
Loans and Leases Receivable Disclosure [Line Items]
Notes receivable, net		$ 186,000	$ 209,000

Real Estate Joint Ventures - Narrative (Details) - apartment	1 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016	Apr. 30, 2017
Artisan Park, L.L.C \| Consolidated variable interest entities
Variable Interest Entity [Line Items]
Percentage of cash contribution for joint venture by parent		74.00%	74.00%
Pier Park Crossings JV
Variable Interest Entity [Line Items]
Number of apartments to be designed, developed and constructed					240
Variable interest entity, qualitative or quantitative information, ownership percentage		65.00%
WindMark JV
Variable Interest Entity [Line Items]
Variable interest entity, qualitative or quantitative information, ownership percentage	49.00%		49.00%
Pier Park North
Variable Interest Entity [Line Items]
Variable interest entity, qualitative or quantitative information, ownership percentage			60.00%	60.00%

Real Estate Joint Ventures - Summarized Financial Information for Unconsolidated Investments (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Investments in and Advances to Affiliates [Line Items]
Total assets	$ 919,686						$ 919,686		$ 1,027,945
Equity	550,722						550,722		669,293
Net loss	$ (6,141)		$ (2,696)				$ (20,943)	$ (12,830)
Other affiliates
Investments in and Advances to Affiliates [Line Items]
Total assets		$ 10,800			$ 10,800				11,500
Accounts payable and other liabilities		300			300				600
Equity		10,500			10,500				$ 10,900
Net loss		$ 200		$ 200	$ 400	$ 500

Debt - (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Principal	$ 56,287	$ 55,653
Unamortized Discount and Debt Issuance Costs	549	613
Debt	55,738	55,040
Construction loan \| Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%
Debt Instrument [Line Items]
Principal	47,507	48,132
Unamortized Discount and Debt Issuance Costs	530	613
Debt	46,977	47,519
Construction loan \| Construction loan, due March 2027, bearing interest at LIBOR plus 1.7% (effective rate of 2.9% at September 30, 2017)
Debt Instrument [Line Items]
Principal	1,624
Unamortized Discount and Debt Issuance Costs	19
Debt	1,605
Secured debt \| Community Development District debt, secured by certain real estate or other collateral, due May 2031 - May 2039, bearing interest at 3.4% to 7.0% at September 30, 2017
Debt Instrument [Line Items]
Principal	7,156	7,521
Unamortized Discount and Debt Issuance Costs	0	0
Debt	$ 7,156	$ 7,521

Debt - Descriptors (Details)	9 Months Ended
Debt - Descriptors (Details)	Sep. 30, 2017	Dec. 31, 2014
Debt Instrument [Line Items]
Debt interest rate		4.80%
Effective interest rate	4.90%
Construction loan \| Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%
Debt Instrument [Line Items]
Debt interest rate	4.10%
Construction loan \| Construction loan, due March 2027, bearing interest at LIBOR plus 1.7% (effective rate of 2.9% at September 30, 2017)
Debt Instrument [Line Items]
Effective interest rate	2.90%
Basis interest rate	1.70%
Minimum \| Construction loan \| Community Development District debt, secured by certain real estate or other collateral, due May 2031 - May 2039, bearing interest at 3.4% to 7.0% at September 30, 2017
Debt Instrument [Line Items]
Debt interest rate	3.40%
Maximum \| Construction loan \| Community Development District debt, secured by certain real estate or other collateral, due May 2031 - May 2039, bearing interest at 3.4% to 7.0% at September 30, 2017
Debt Instrument [Line Items]
Debt interest rate	7.00%

Debt - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended
Debt - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2017	Dec. 31, 2016	Oct. 31, 2015
Debt Instrument [Line Items]
Long-term debt		$ 56,287	$ 55,653
Letters of credit outstanding		100	400
Total community development district debt		21,900	22,600
Construction loan \| Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1%
Debt Instrument [Line Items]
Long-term debt		47,507	$ 48,132
Construction loan \| Construction loan, due March 2027, bearing interest at LIBOR plus 1.7% (effective rate of 2.9% at September 30, 2017)
Debt Instrument [Line Items]
Long-term debt		1,624
Proceeds from issuance of long-term debt	$ 1,600
Debt instrument, period subject to interest payments only	12 months
Pier Park North \| Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1% \| Consolidated variable interest entities
Debt Instrument [Line Items]
Construction loan				$ 48,200
Letters of credit outstanding		$ 1,300

Debt - Maturities of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
2017	$ 241
2018	1,493
2019	1,540
2020	1,543
2021	1,525
Thereafter	49,945
Long-term debt	$ 56,287	$ 55,653

Other Liabilities - (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Accounts payable	$ 8,838	$ 4,376
Accrued compensation	1,911	2,655
Deferred revenue	17,043	15,289
Membership deposits and initiation fees	9,328	7,384
Advance deposits	4,083	3,419
Other accrued liabilities	7,961	4,977
Accrued interest expense for Senior Notes held by SPE	712	2,850
Total other liabilities	$ 49,876	$ 40,950

Other Liabilities - Narrative (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred revenue	$ 17,043,000	$ 15,289,000
Accrued property taxes	3,700,000	0
Florida Department of Transportation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred revenue	$ 12,500,000	$ 12,500,000

Income Taxes - Income Tax Expense (Benefit) Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Tax at the federal statutory rate	$ 3,005	$ 1,280	$ 11,167	$ 6,424
State income taxes (net of federal benefit)	301	128	1,117	642
Tax effect of timber at the federal statutory rate of 23.8%	(194)	(121)	(420)	(381)
Decrease in valuation allowance	(250)	(350)	(846)	(713)
Other	(219)	11	(187)	(802)
Total income tax expense	$ 2,643	$ 948	$ 10,831	$ 5,170
Federal statutory rate			35.00%	35.00%
Timber statutory federal rate			23.80%	23.80%

Income Taxes - Narrative (Details) - USD ($)	9 Months Ended
Income Taxes - Narrative (Details) - USD ($)	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Deferred tax assets, tax credit carryforwards, alternative minimum tax	$ 8,700,000		$ 13,500,000
Deferred tax assets, valuation allowance	4,300,000		5,100,000
Valuation allowance increase (decrease)	(800,000)
Unrecognized tax benefits	1,700,000		1,700,000
Unrecognized tax benefits, that would impact effective tax rate	0		0
Unrecognized tax benefits, period increase (decrease)	0	$ 0
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0		0
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	395,300,000		$ 427,300,000
WindMark JV
Operating Loss Carryforwards [Line Items]
Federal tax refund	21,900,000
Tax year 2016
Operating Loss Carryforwards [Line Items]
Federal tax refund	$ 4,400,000

Accumulated Other Comprehensive (Loss) Income - Summary of Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Balance at beginning period			$ 686,799
Total other comprehensive income (loss), net of tax	$ (247)	$ 1,979	(3,698)	$ 1,980
Balance at period end	566,754		566,754
Unrealized Gain and (Loss) on Available-for-Sale Securities
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Balance at beginning period			2,507
Other comprehensive income before reclassifications			2,443
Amounts reclassified from accumulated other comprehensive loss			(6,141)
Total other comprehensive income (loss), net of tax			(3,698)
Balance at period end	$ (1,191)		$ (1,191)

Accumulated Other Comprehensive (Loss) Income - Summary of the Tax Effects Allocated to Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Unrealized (loss) gain on investments:
Reclassification adjustment for loss (gain) included in earnings	$ 104	$ (40)	$ (10,757)	$ (40)
Reclassification adjustment for loss (gain) included in earnings, tax benefit or (expense)		15		15
Reclassification adjustment for loss (gain) included in earnings net-of-tax		(25)		(25)
Reclassification adjustment for other-than-temporary impairment loss included in earnings, before tax	403	0	769	0
Other comprehensive income (loss), before-tax amount	(172)	3,217	(6,017)	3,219
Other comprehensive income (loss), tax benefit or (expense)	(75)	(1,238)	2,319	(1,239)
Total other comprehensive income (loss), net of tax	(247)	1,979	(3,698)	1,980
Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest
Unrealized (loss) gain on investments:
Reclassification adjustment for loss (gain) included in earnings	104		(10,757)
Reclassification adjustment for loss (gain) included in earnings, tax benefit or (expense)	(40)		4,143
Reclassification adjustment for loss (gain) included in earnings net-of-tax	64		(6,614)
Reclassification adjustment for other-than-temporary impairment loss included in earnings, before tax	403		769
Reclassification adjustment for other-than-temporary impairment loss included in earnings, tax benefit or (expense)	(296)		(296)
Reclassification adjustment for other-than-temporary impairment loss included in earnings, net of tax	107		473
Other comprehensive income (loss), before-tax amount	(172)		(6,017)
Other comprehensive income (loss), tax benefit or (expense)	(75)		2,319
Total other comprehensive income (loss), net of tax	(247)		(3,698)
Available-for-sale investments \| Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest
Unrealized (loss) gain on investments:
Unrealized (loss) gain on investments, before-tax amount	(683)	3,257	3,967	3,259
Unrealized (loss) gain on investments, tax benefit or (expense)	263	(1,253)	(1,526)	(1,254)
Unrealized (loss) gain on investments, net-of-tax amount	(420)	$ 2,004	2,441	$ 2,005
Restricted investments \| Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest
Unrealized (loss) gain on investments:
Unrealized (loss) gain on investments, before-tax amount	4		4
Unrealized (loss) gain on investments, tax benefit or (expense)	(2)		(2)
Unrealized (loss) gain on investments, net-of-tax amount	$ 2		$ 2

Stockholders' Equity - (Details)					3 Months Ended		9 Months Ended
Stockholders' Equity - (Details)	Sep. 20, 2017 USD ($) shares	Jul. 11, 2017 USD ($) shares	Jul. 03, 2017 director shares	May 17, 2016 director shares	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 18, 2017 USD ($)	Jul. 07, 2017 USD ($)	May 25, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased during the period (in shares) \| shares	3,742,111	1,500,000					7,811,937	995,650
Average purchase price per share for share repurchase (in dollars per share) \| $ / shares							$ 17.42	$ 14.88
Payments for repurchase of common stock	$ 65,800,000	$ 27,000,000					$ 135,995,000	$ 14,820,000
Stock repurchase program, additional authorized repurchase amount									$ 66,000,000.0	$ 28,000,000.0
Stock repurchase program, remaining authorized repurchase amount					$ 147,700,000		147,700,000
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity grant aggregate fair market value											$ 50,000
Number of directors granted restricted stock awards \| director			2
Number of restricted stock awards issued (in shares) \| shares			5,334
Restricted stock awards expense (less than)					$ 100,000	$ 100,000	$ 100,000	$ 100,000
Restricted stock awards \| 2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of directors granted restricted stock awards \| director				3
Number of restricted stock awards issued (in shares) \| shares				8,919
Date of issue \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
August 17, 2016 \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
November 17, 2016 \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
February 17, 2017 \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%

Employee Benefit Plan - (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
Employee Benefit Plan - (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2014	Dec. 31, 2016
Retirement Benefits [Abstract]
Assets contributed to 401(k) Plan					$ 7,900
Restricted investments	$ 4,462		$ 4,462			$ 5,636
401(k) Plan distribution period (in years)			4 years
Compensation expense for assets allocated to participants			$ 1,200	$ 1,400
Gain on allocated asset (less than)	$ 100	$ 100	$ 100	$ 100

Other Income (Expense) - Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investment income, net
Interest and dividend income	$ 4,445	$ 1,528	$ 13,016	$ 1,969
Accretion income	375	960	1,696	2,002
Realized (loss) gain on the sale of investments	(104)	40	10,757	40
Other-than-temporary impairment loss	(403)	0	(769)	0
Total net investment income from available-for-sale securities	4,313	2,528	24,700	4,011
Interest income from investments in SPEs	2,050	2,051	6,151	6,151
Interest accrued on notes receivable and other interest	89	110	259	216
Total investment income, net	6,452	4,689	31,110	10,378
Interest expense
Interest expense and amortization of discount and issuance costs for Senior Notes issued by SPE	(2,195)	(2,259)	(6,582)	(6,640)
Other interest expense	(843)	(816)	(2,535)	(2,615)
Total interest expense	(3,038)	(3,075)	(9,117)	(9,255)
Claim settlement	0	0	0	12,548
Other income, net
Accretion income from retained interest investments	279	249	813	733
Hunting lease income	145	138	424	415
Miscellaneous income, net	493	48	4,323	339
Other income, net	917	435	5,560	1,487
Total other income, net	$ 4,331	$ 2,049	$ 27,553	$ 15,158

Other Income (Expense) - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Income (Expense) [Line Items]
Other-than-temporary impairment loss	$ 403	$ 0	$ 769	$ 0
Effective interest rate	4.90%		4.90%
Litigation settlement gain (loss)	$ 0	$ 0	$ 0	$ 12,548
Litigation settlement, amount received			$ 3,500
Minimum
Other Income (Expense) [Line Items]
Retained interest, effective interest rate			3.70%
Maximum
Other Income (Expense) [Line Items]
Retained interest, effective interest rate			11.70%

Segment Information - Information by Business Segment (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Segment golf_course	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments \| Segment			5
Operating revenue	$ 33,654	$ 27,192	$ 77,235	$ 76,997
Income (loss) before income taxes	8,784	3,644	31,774	18,000
Total assets	919,686		$ 919,686		$ 1,027,945
Resorts and leisure
Segment Reporting Information [Line Items]
Number of golf courses \| golf_course			4
Operating segments \| Residential real estate
Segment Reporting Information [Line Items]
Operating revenue	9,411	3,122	$ 15,391	15,905
Income (loss) before income taxes	1,802	237	3,026	4,676
Total assets	115,758		115,758		112,220
Operating segments \| Commercial real estate
Segment Reporting Information [Line Items]
Operating revenue	446	631	2,624	631
Income (loss) before income taxes	(466)	(496)	(1,115)	(1,644)
Total assets	58,134		58,134		60,150
Operating segments \| Resorts and leisure
Segment Reporting Information [Line Items]
Operating revenue	18,198	19,046	45,633	47,590
Income (loss) before income taxes	2,916	2,420	4,521	3,414
Total assets	77,000		77,000		73,436
Operating segments \| Leasing operations
Segment Reporting Information [Line Items]
Operating revenue	2,847	2,655	7,884	7,336
Income (loss) before income taxes	302	454	814	75
Total assets	107,986		107,986		80,863
Operating segments \| Forestry
Segment Reporting Information [Line Items]
Operating revenue	2,562	1,509	5,236	5,233
Income (loss) before income taxes	2,437	1,282	4,808	4,376
Total assets	20,089		20,089		20,664
Other
Segment Reporting Information [Line Items]
Operating revenue	190	229	467	302
Income (loss) before income taxes	1,793	$ (253)	19,720	$ 7,103
Total assets	$ 540,719		$ 540,719		$ 680,612

Commitments and Contingencies - (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Accrued liabilities for other litigation, claims, other disputes and governmental proceedings	$ 1.2	$ 1.3
Guarantor Obligations [Line Items]
Letters of credit outstanding	0.1	0.4
Purchase obligations, total	14.1
Purchase obligation, remainder of 2017	12.0
Purchase obligation, due in 2018	2.0
Purchase obligation, due in 2019	0.1
Pier Park North \| Refinanced loan in the Pier Park North JV, due November 2025, bearing interest at 4.1% \| Consolidated variable interest entities
Guarantor Obligations [Line Items]
Letters of credit outstanding	1.3
Surety bonds \| Certain development projects
Guarantor Obligations [Line Items]
Commitment obligations	$ 8.6	$ 6.2

Nature of Operations - (Details)	9 Months Ended
Nature of Operations - (Details)	Sep. 30, 2017 Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable operating segments	5