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Subordinate Loan Portfolio (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 1,938,589 |
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 49,309 | $ 29,400
Current Face Amount | 26,328 | 29,751
Carrying Value | 26,095 | 29,762
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] | Condo Conversion [Member] | Condo Conversion - NY, NY September 2015 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 29,400 | 29,400
Current Face Amount | 6,386 | 29,751
Carrying Value | 6,415 | 29,762
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use, New York, NY, March 2017 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 12,347 |
Current Face Amount | 12,347 |
Carrying Value | 12,222 |
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel, New York, NY, September 2018 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 2,562 |
Current Face Amount | 2,595 |
Carrying Value | 2,458 |
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] | Multifamily Portfolio [Member] | Multifamily - Williston, ND [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 5,000 |
Current Face Amount | 5,000 |
Carrying Value | 5,000 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 915,646 | 533,034
Current Face Amount | 912,678 | 533,848
Carrying Value | 905,256 | 531,420
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Condo Conversion [Member] | Condo Conversion, New York, NY, August 2018 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 50,000 |
Current Face Amount | 52,418 |
Carrying Value | 51,941 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use - North Carolina [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 6,525 | 6,525
Current Face Amount | 6,525 | 6,525
Carrying Value | 6,525 | 6,525
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use - Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 17,000 | 17,000
Current Face Amount | 19,500 | 19,464
Carrying Value | 19,377 | 19,294
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use - London, England [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 50,009 | 50,009
Current Face Amount | 50,676 | 52,355
Carrying Value | 50,676 | 52,355
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use - Pittsburgh, PA [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount |  | 22,500
Current Face Amount |  | 22,500
Carrying Value |  | 22,473
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use - New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 81,715 | 50,000
Current Face Amount | 88,368 | 50,000
Carrying Value | 87,818 | 48,973
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use - Various, May 2017 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 45,000 |
Current Face Amount | 45,000 |
Carrying Value | 44,854 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use, New York, NY, October 2018 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 30,000 |
Current Face Amount | 30,000 |
Carrying Value | 29,785 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel Portfolio - Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount |  | 50,000
Current Face Amount |  | 34,042
Carrying Value |  | 33,995
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel Portfolio - Rochester, MN [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 25,000 | 25,000
Current Face Amount | 24,182 | 24,486
Carrying Value | 24,182 | 24,486
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel, New York, NY - December 2015 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 50,000 |
Current Face Amount | 50,000 |
Carrying Value | 49,522 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel - NY, NY, July 2016 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount |  | 20,000
Current Face Amount |  | 20,000
Carrying Value |  | 19,870
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel - Burbank, CA [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 20,000 |
Current Face Amount | 20,000 |
Carrying Value | 20,000 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel - Phoenix, AZ [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 25,000 |
Current Face Amount | 25,000 |
Carrying Value | 25,000 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel - Washington D.C. [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 20,000 |
Current Face Amount | 20,000 |
Carrying Value | 19,934 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Multifamily Portfolio [Member] | Multifamily Portfolio - Florida [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 22,000 |
Current Face Amount | 22,000 |
Carrying Value | 21,895 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Multifamily Portfolio [Member] | Multifamily Portfolio - Florida (2) [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 15,500 |
Current Face Amount | 15,500 |
Carrying Value | 15,426 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Multifamily Portfolio [Member] | Multifamily, New York, New York [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 55,000 |
Current Face Amount | 55,000 |
Carrying Value | 54,558 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Office [Member] | Office - Michigan [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 9,000 | 9,000
Current Face Amount | 8,753 | 8,813
Carrying Value | 8,753 | 8,813
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Office [Member] | Office Complex - Missouri [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 10,000 | 10,000
Current Face Amount | 9,566 | 9,711
Carrying Value | 9,566 | 9,711
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Office [Member] | Office Condo New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 14,000 | 14,000
Current Face Amount | 14,000 | 14,000
Carrying Value | 13,631 | 13,596
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Warehouse [Member] | Warehouse Portfolio - Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 32,000 | 32,000
Current Face Amount | 32,000 | 32,000
Carrying Value | 32,000 | 32,000
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Healthcare [Member] | Healthcare Portfolio - Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 50,000 | 50,000
Current Face Amount | 39,223 | 50,000
Carrying Value | 39,223 | 50,000
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Ski Resort [Member] | Ski Resort - California [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount |  | 40,000
Current Face Amount |  | 40,000
Carrying Value |  | 39,771
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Ski Resort [Member] | Ski Resort Montana [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 15,000 | 15,000
Current Face Amount | 15,000 | 15,000
Carrying Value | 14,878 | 14,861
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Senior Housing Facility [Member] | Senior Housing - United Kingdom [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 82,063 |
Current Face Amount | 79,735 |
Carrying Value | 79,735 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Condo Development [Member] | Condo Development - New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 33,840 |
Current Face Amount | 34,184 |
Carrying Value | 33,567 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Condo Development [Member] | Condo Pre-development, United Kingdom [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 81,994 |
Current Face Amount | 81,048 |
Carrying Value | 81,048 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Destination Resort [Member] | Destination Resort, Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 75,000 |
Current Face Amount | 75,000 |
Carrying Value | 71,362 |
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Condo Construction [Member] | Condo Construction - NY, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount |  | 60,000
Current Face Amount |  | 76,344
Carrying Value |  | 76,005
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Multifamily Conversion [Member] | Multifamily Conversion - New York, NY, December 2015 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount |  | 18,000
Current Face Amount |  | 14,608
Carrying Value |  | 14,703
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Multifamily Conversion [Member] | Multifamily Conversion - New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount |  | 44,000
Current Face Amount |  | 44,000
Carrying Value |  | 43,989
Subordinate Loans [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 964,955 | 562,434
Current Face Amount | 939,006 | 563,599
Carrying Value | $ 931,351 | $ 561,182
Coupon rate of loan | 11.34% | 11.34%
Subordinate Loans [Member] | Condo Conversion [Member] | Condo Conversion - NY, NY September 2015 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 6,386 |
Carrying Value | $ 6,415 |
Coupon rate of loan | 7.00% |
Subordinate Loans [Member] | Condo Conversion [Member] | Condo Conversion, New York, NY, August 2018 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 52,418 |
Carrying Value | $ 51,941 |
Coupon rate of loan | 12.75% |
Subordinate Loans [Member] | Mixed Use [Member] | Mixed Use - North Carolina [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 6,525 |
Carrying Value | $ 6,525 |
Coupon rate of loan | 11.10% |
Subordinate Loans [Member] | Mixed Use [Member] | Mixed Use - Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 19,500 |
Carrying Value | $ 19,377 |
Coupon rate of loan | 14.00% |
Subordinate Loans [Member] | Mixed Use [Member] | Mixed Use - London, England [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 50,676 |
Carrying Value | $ 50,676 |
Coupon rate of loan | 10.25% |
Subordinate Loans [Member] | Mixed Use [Member] | Mixed Use - New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 88,368 |
Carrying Value | $ 87,818 |
Coupon rate of loan | 10.69% |
Subordinate Loans [Member] | Mixed Use [Member] | Mixed Use - Various, May 2017 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 45,000 |
Carrying Value | $ 44,854 |
Coupon rate of loan | 9.30% |
Subordinate Loans [Member] | Mixed Use [Member] | Mixed Use, New York, NY, March 2017 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 12,347 |
Carrying Value | $ 12,222 |
Coupon rate of loan | 10.25% |
Subordinate Loans [Member] | Mixed Use [Member] | Mixed Use, New York, NY, October 2018 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 30,000 |
Carrying Value | $ 29,785 |
Coupon rate of loan | 10.50% |
Subordinate Loans [Member] | Hotel [Member] | Hotel Portfolio - Rochester, MN [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 24,182 |
Carrying Value | $ 24,182 |
Coupon rate of loan | 11.00% |
Subordinate Loans [Member] | Hotel [Member] | Hotel, New York, NY - December 2015 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 50,000 |
Carrying Value | $ 49,522 |
Coupon rate of loan | 12.36% |
Subordinate Loans [Member] | Hotel [Member] | Hotel - Burbank, CA [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 20,000 |
Carrying Value | $ 20,000 |
Coupon rate of loan | 10.40% |
Subordinate Loans [Member] | Hotel [Member] | Hotel - Phoenix, AZ [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 25,000 |
Carrying Value | $ 25,000 |
Coupon rate of loan | 11.50% |
Subordinate Loans [Member] | Hotel [Member] | Hotel - Washington D.C. [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 20,000 |
Carrying Value | $ 19,934 |
Coupon rate of loan | 9.80% |
Subordinate Loans [Member] | Hotel [Member] | Hotel, New York, NY, September 2018 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 2,595 |
Carrying Value | $ 2,458 |
Coupon rate of loan | 5.50% |
Subordinate Loans [Member] | Multifamily Portfolio [Member] | Multifamily Portfolio - Florida [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 22,000 |
Carrying Value | $ 21,895 |
Coupon rate of loan | 11.70% |
Subordinate Loans [Member] | Multifamily Portfolio [Member] | Multifamily Portfolio - Florida (2) [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 15,500 |
Carrying Value | $ 15,426 |
Coupon rate of loan | 11.70% |
Subordinate Loans [Member] | Multifamily Portfolio [Member] | Multifamily, New York, New York [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 55,000 |
Carrying Value | $ 54,558 |
Coupon rate of loan | 10.75% |
Subordinate Loans [Member] | Multifamily Portfolio [Member] | Multifamily - Williston, ND [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 5,000 |
Carrying Value | $ 5,000 |
Coupon rate of loan | 6.15% |
Subordinate Loans [Member] | Office [Member] | Office - Michigan [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 8,753 |
Carrying Value | $ 8,753 |
Coupon rate of loan | 13.00% |
Subordinate Loans [Member] | Office [Member] | Office Complex - Missouri [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 9,566 |
Carrying Value | $ 9,566 |
Coupon rate of loan | 11.75% |
Subordinate Loans [Member] | Office [Member] | Office Condo New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 14,000 |
Carrying Value | $ 13,631 |
Coupon rate of loan | 11.25% |
Subordinate Loans [Member] | Warehouse [Member] | Warehouse Portfolio - Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 32,000 |
Carrying Value | $ 32,000 |
Coupon rate of loan | 11.50% |
Subordinate Loans [Member] | Healthcare [Member] | Healthcare Portfolio - Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 39,223 |
Carrying Value | $ 39,223 |
Coupon rate of loan | 9.47% |
Subordinate Loans [Member] | Ski Resort [Member] | Ski Resort Montana [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 15,000 |
Carrying Value | $ 14,878 |
Coupon rate of loan | 14.00% |
Subordinate Loans [Member] | Senior Housing Facility [Member] | Senior Housing - United Kingdom [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 79,735 |
Carrying Value | $ 79,735 |
Coupon rate of loan | 8.83% |
Subordinate Loans [Member] | Condo Development [Member] | Condo Development - New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 34,184 |
Carrying Value | $ 33,567 |
Coupon rate of loan | 13.00% |
Subordinate Loans [Member] | Condo Development [Member] | Condo Pre-development, United Kingdom [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 81,048 |
Carrying Value | $ 81,048 |
Coupon rate of loan | 11.14% |
Subordinate Loans [Member] | Destination Resort [Member] | Destination Resort, Various [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Current Face Amount | $ 75,000 |
Carrying Value | $ 71,362 |
Coupon rate of loan | 9.10% |

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