Loans Receivable, At Fair Value - Activity Relating to Loans Receivable, at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]
Loans receivable at Fair Value, Beginning Balance
Consolidation of CT Legacy Partners	150,332
Capitalized interest	325
Loan satisfactions	(79,959)
Partial loan repayments	(1,721)
Unrealized gain on investments at fair value	3,899
Reclassification to other assets	(6,813)
Loans receivable at Fair Value, Ending Balance	$ 66,063