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Subordinate Loan Portfolio (Details 2) - Subordinate Loans [Member] $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) option | Dec. 31, 2014 USD ($) option
Mortgage Loans on Real Estate [Line Items] |  |
Unfunded Loan Commitments | $ | $ 54,423 |
Mixed Use, Senior Housing, Hotel, Condo Conversion and Multifamily [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 1 year |
Number of options to extend loan agreement | 2 |
Healthcare and Multifamily [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 1 year |
Number of options to extend loan agreement | 3 |
Healthcare Portfolio and Hotel [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term |  | 1 year
Number of options to extend loan agreement |  | 3
Mixed Use [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term |  | 1 year
Number of options to extend loan agreement |  | 2
Hotel, Condo Construction, Condo Conversion, and Multifamily Conversion [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term |  | 1 year
Hotel, New York, NY, September 2018 [Member] | Hotel [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 1 year |
Number of options to extend loan agreement | 2 |
Unfunded Loan Commitments | $ | $ 12,478 |
Mixed Use - New York, NY [Member] | Mixed Use [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 1 year | 1 year
Number of options to extend loan agreement | 2 | 2
Unfunded Loan Commitments | $ | $ 785 | $ 32,500
Condo Development - New York, NY [Member] | Condo Development [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 1 year |
Unfunded Loan Commitments | $ | $ 41,160 |
Mixed Use, New York, NY, October 2018 [Member] | Mixed Use [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 1 year |
Destination Resort, Various [Member] | Destination Resort [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 1 year |
Number of options to extend loan agreement | 4 |
Multifamily, New York, New York [Member] | Multifamily Portfolio [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 6 months |
Hotel, New York, NY - December 2015 [Member] | Hotel [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term | 3 months |
Mixed Use - Various [Member] | Mixed Use [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Option to extend loan agreement, term |  | 3 months

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