Debt Obligations, net (Encumbered/Unencumbered Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Real estate, net	$ 1,476,591	$ 1,491,752
Real estate available and held for sale	71,934	83,764
Land and development, net	955,150	945,565
Loans receivable and other lending investments, net	1,381,227	1,450,439
Other investments	197,559	214,406
Cash and other assets	1,212,055	639,588
Total assets	5,294,516	4,825,514
Loans receivable, net	1,299,846	1,370,523
Total loan participations payable, net
Debt Instrument [Line Items]
Loans receivable, net	181,900	159,100
Collectively Evaluated for Impairment
Debt Instrument [Line Items]
General reserves for loan losses	18,400	23,300
Encumbered Assets
Debt Instrument [Line Items]
Real estate, net	1,005,826	881,212
Real estate available and held for sale	0	0
Land and development, net	35,165	35,165
Loans receivable and other lending investments, net	137,293	172,581
Other investments	0	0
Cash and other assets	0	0
Total assets	1,178,284	1,088,958
Unencumbered Assets
Debt Instrument [Line Items]
Real estate, net	470,765	610,540
Real estate available and held for sale	71,934	83,764
Land and development, net	919,985	910,400
Loans receivable and other lending investments, net	1,080,448	1,142,050
Other investments	197,559	214,406
Cash and other assets	1,212,055	639,588
Total assets	$ 3,952,746	$ 3,600,748

Sum of all assets excluding the Company's Total Portfolio Assets.

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Amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics. In addition, amount also includes total debt and equity financial instruments including: securities held-to-maturity and securities available-for-sale.

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, including real estate considered to be inventory of the entity.

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Real Estate Investment Property, Held for Use, Net

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 12
-Article 7

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities..

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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-Paragraph 1
-Subparagraph (SX 210.9-03.7(a))
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Other investments not otherwise specified in the taxonomy.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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