Debt Obligations, net (Encumbered/Unencumbered Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Real estate, net	$ 1,435,920	$ 1,593,983
Real estate available and held for sale	126,070	137,274
Land and development, net	1,046,013	1,001,963
Loans receivable and other lending investments, net	1,568,439	1,601,985
Other investments	228,756	254,172
Cash and other assets	804,199	1,008,415
Total assets	5,209,397	5,597,792
Loans receivable, net	1,508,503	1,539,696
Loan Participations Payable
Debt Instrument [Line Items]
Loans receivable, net	186,600	153,000
Encumbered Assets
Debt Instrument [Line Items]
Real estate, net	903,185	816,721
Real estate available and held for sale	0	10,593
Land and development, net	22,364	17,714
Loans receivable and other lending investments, net	169,117	170,162
Other investments	0	22,352
Cash and other assets	0	0
Total assets	1,094,666	1,037,542
Unencumbered Assets
Debt Instrument [Line Items]
Real estate, net	532,735	777,262
Real estate available and held for sale	126,070	126,681
Land and development, net	1,023,649	984,249
Loans receivable and other lending investments, net	1,249,698	1,314,823
Other investments	228,756	231,820
Cash and other assets	804,199	1,008,415
Total assets	3,965,107	4,443,250
Collectively Evaluated for Impairment
Debt Instrument [Line Items]
General reserves for loan losses	$ 37,000	$ 36,000

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.

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

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Other investments not otherwise specified in the taxonomy.

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