Other Expenses - Schedule of General and Administrative Expenses (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Professional services	$ 2,441	$ 895	$ 2,210
Operating and other costs	1,971	1,732	2,283
Transaction costs - investment management sale		3,870
Subtotal	4,412	6,497	4,493
Non-cash compensation expenses
Management incentive awards plan - CT Legacy Partners	4,915	2,232	3,054
Subtotal	6,242	3,808	3,765
Expenses of consolidated securitization vehicles	851	64	724
Total	11,505	10,369	8,982
Director [Member]
Non-cash compensation expenses
Stock-based compensation	263	223	206
Employee [Member]
Non-cash compensation expenses
Stock-based compensation	$ 1,064	$ 1,353	$ 505