Loans Receivable, at Fair Value - Activity Relating to Loans Receivable, at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Receivables [Abstract]
Loans receivable at Fair Value, Beginning Balance
Consolidation of CT Legacy Partners	150,332	(645,163)	(573,483)
Capitalized interest	984
Loan satisfactions	(110,347)
Partial loan repayments	(307)
Gain on investments at fair value	6,816
Reclassification to other assets	(6,813)		(7,914)
Loans receivable at Fair Value, Ending Balance	$ 40,665