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Subordinate Loans - Loans Portfolio (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | $ 39,566 | $ 49,309
Current Face Amount | 16,565 | 26,328
Carrying Value | 16,492 | 26,095
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] | Condo Conversion [Member] | Condo Conversion - New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 29,400 | 29,400
Current Face Amount | 6,385 | 6,386
Carrying Value | 6,449 | 6,415
Subordinate Mortgage Loans to Company Commercial Mortgage Loans [Member] | Mixed Use [Member] | Mixed Use - Brooklyn, NY [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 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 5,166 | 2,562
Current Face Amount | 5,166 | 2,595
Carrying Value | 5,029 | 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 | 5,000
Current Face Amount | 5,014 | 5,000
Carrying Value | 5,014 | 5,000
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 926,598 | 915,646
Current Face Amount | 920,888 | 912,678
Carrying Value | 913,909 | 905,256
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Condo Conversion [Member] | Condo Conversion - New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 50,000 | 50,000
Current Face Amount | 54,125 | 52,418
Carrying Value | 53,750 | 51,941
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Condo Conversion [Member] | Condo Conversion, New York, NY - January 2016 [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 23,434 |
Current Face Amount | 23,633 |
Carrying Value | 22,879 |
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
Current Face Amount |  | 19,500
Carrying Value |  | 19,377
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 | 49,383 | 50,009
Current Face Amount | 49,383 | 50,676
Carrying Value | 49,383 | 50,676
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 | 82,500 | 81,715
Current Face Amount | 91,605 | 88,368
Carrying Value | 91,199 | 87,818
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 | 45,000 | 45,000
Current Face Amount | 45,000 | 45,000
Carrying Value | 44,887 | 44,854
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 | 30,000 | 30,000
Current Face Amount | 30,000 | 30,000
Carrying Value | 29,887 | 29,785
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 | 24,102 | 24,182
Carrying Value | 24,102 | 24,182
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 | 20,000
Current Face Amount | 20,000 | 20,000
Carrying Value | 20,000 | 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 | 25,000
Current Face Amount | 25,000 | 25,000
Carrying Value | 25,000 | 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 | 20,000
Current Face Amount | 20,000 | 20,000
Carrying Value | 19,949 | 19,934
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Hotel [Member] | Hotel, New York, NY [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 50,000 | 50,000
Current Face Amount | 50,000 | 50,000
Carrying Value | 49,631 | 49,522
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 | 22,000
Current Face Amount | 22,000 | 22,000
Carrying Value | 21,914 | 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 | 15,500
Current Face Amount | 15,500 | 15,500
Carrying Value | 15,439 | 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 | 55,000
Current Face Amount | 55,000 | 55,000
Carrying Value | 54,617 | 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 | 8,736 | 8,753
Carrying Value | 8,736 | 8,753
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 | 9,528 | 9,566
Carrying Value | 9,528 | 9,566
Subordinate Mortgage Loans to Third Party Commercial Mortgage Loans [Member] | Office [Member] | Office Condo - NY, 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 | 13,641 | 13,631
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 | 39,223
Carrying Value | 39,223 | 39,223
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 | 14,883 | 14,878
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 | 81,838 | 82,063
Current Face Amount | 77,504 | 79,735
Carrying Value | 77,504 | 79,735
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 | 75,000
Current Face Amount | 75,000 | 75,000
Carrying Value | 71,751 | 71,362
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 | 38,424 | 33,840
Current Face Amount | 39,044 | 34,184
Carrying Value | 38,501 | 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 | 81,994
Current Face Amount | 78,980 | 81,048
Carrying Value | 78,980 | 81,048
Subordinate loans [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Original Face Amount | 966,164 | 964,955
Current Face Amount | 937,453 | 939,006
Carrying Value | $ 930,401 | $ 931,351
Coupon rate of loan |  | 11.34%

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- Definition The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(c)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph c -Article 7 + Details
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