Schedule IV - Real Estate Mortgage Loans (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) loan
First Mortgages \| Washington \| 8.00% Fixed Rate Loans due 2020
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	1,000
Interest Rate	8.00%
Monthly Debt Service	$ 167
Face Value	25,000
Net Book Value	$ 24,826
First Mortgages \| Washington \| 6.00% Fixed Rate Loans due 2017
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	1,000
Interest Rate	6.00%
Monthly Debt Service	$ 44
Face Value	6,187
Net Book Value	$ 6,108
First Mortgages \| California \| 9.42% Fixed Rate Loans Due 2017
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	11,000
Interest Rate	9.42%
Monthly Debt Service	$ 1,624
Face Value	176,719
Net Book Value	$ 173,451
First Mortgages \| Multiple \| 9.21% Variable Rate Loans due 2019
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	3,000
Interest Rate	9.21%
Monthly Debt Service	$ 131
Face Value	17,023
Net Book Value	$ 17,023
First Mortgages \| Ohio \| 7.89% Variable Rate Loans Due 2021
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	5,000
Interest Rate	7.89%
Monthly Debt Service	$ 516
Face Value	78,448
Net Book Value	$ 78,448
Second Mortgages \| Multiple
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	9,000
Interest Rate	11.25%
Monthly Debt Service	$ 48
Face Value	5,000
Net Book Value	4,965
Aggregate commitment	$ 215,000
Mezzanine Loans \| Multiple
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	214,000
Interest Rate	8.19%
Monthly Debt Service	$ 2,963
Face Value	419,964
Net Book Value	419,964
Prior liens	$ 2,184,601
Mezzanine Loans \| Virginia
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	1,000
Interest Rate	10.00%
Monthly Debt Service	$ 86
Face Value	10,044
Net Book Value	$ 10,044
Construction Loans \| Colorado
Mortgage Loans on Real Estate [Line Items]
Number of RE Assets \| loan	1,000
Interest Rate	8.75%
Monthly Debt Service	$ 330
Face Value	46,436
Net Book Value	$ 45,680

The carrying amount of the outstanding balance due under the mortgage loan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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Amount of the contractual principal due at the origination of the mortgage loan (face amount).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

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Indicates the number of mortgages under each classification.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.3)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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Amount of prior lien on the real estate that secures the mortgage loan.

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Mortgage Loans On Real Estate, Aggregate Commitment Of Mortgages

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Mortgage Loans on Real Estate, Monthly Debt Service Amount

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