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Commitments and Contingencies - Additional Information (Detail)
In Thousands, unless otherwise specified
Dec. 31, 2013
Subordinate loans [Member]
Condo Conversion [Member]
USD ($)
Jun. 30, 2014
Condo Conversion - NY, NY September 2015 [Member]
Subordinate loans [Member]
Condo Conversion [Member]
USD ($)
Jun. 30, 2014
KBCD Partnership [Member]
USD ($)
Jun. 30, 2014
KBCD Partnership [Member]
EUR (€)
Schedule of Equity Method Investments [Line Items]        
Maximum limited partnership investment     $ 50,000 € 38,000
Indirect ownership interest from limited partnership     21.00% 21.00%
Unfunded loan commitments $ 29,106 $ 100,100