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Subordinate Loan Portfolio (Parenthetical) (Detail) (Subordinate Loans [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Hotel - New York [Member] | Hotel [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term | 1 year | 1 year
Condo Conversion - NY, NY [Member] | Condo Conversion [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term | 1 year | 1 year
Number of Options to Extend Loan Agreement | 2 | 2
Unfunded Loan Commitments |  | $ 34,650
Multifamily Conversion - NY, NY June 2014 [Member] | Multifamily Conversion [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term | 3 months |
Condo Conversion - NY, NY September 2015 [Member] | Condo Conversion [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term | 1 year |
Unfunded Loan Commitments | $ 29,106 |
Hotel Portfolio - New York [Member] | Hotel [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term |  | 1 year
Number of Options to Extend Loan Agreement |  | 3
Retail Center - Virginia [Member] | Retail [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term |  | 1 year
Number of Options to Extend Loan Agreement |  | 2
Hotel - New York March 2014 [Member] | Hotel [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term |  | 1 year
Number of Options to Extend Loan Agreement |  | 2
Hotel Portfolio - Various [Member] | Hotel [Member] |  |
Mortgage Loans on Real Estate [Line Items] |  |
Debt Instrument, Option to Extend Loan Agreement, Term |  | 1 year

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- Definition The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 + Details
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