General and Administrative Expenses - Schedule of General and Administrative Expenses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Management fees to affiliates			$ 3,416
Professional services			2,109	3,611
Operating and other costs			1,123	849
Subtotal			6,648	4,460
Non-cash compensation expenses
Management incentive awards plan - CT Legacy Partners			1,969	944
Subtotal			2,138	1,788
Expenses of consolidated securitization vehicles			726	66
Total	4,048	3,991	9,512	6,314
Director [Member]
Non-cash compensation expenses
Stock-based compensation			169	169
Employee [Member]
Non-cash compensation expenses
Stock-based compensation				$ 675