Other Expenses - Schedule of General and Administrative Expenses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Income and Expenses [Abstract]
Professional services	$ 701	$ 843	$ 1,983	$ 2,109
Operating and other costs	461	148	1,503	1,123
Subtotal	1,162	991	3,486	3,232
Non-cash and CT Legacy Portfolio compensation expenses
Management incentive awards plan-CTOPI			11,190
Management incentive awards plan-CT Legacy Partners	458	458	1,010	1,969
Director stock-based compensation	94	94	281	169
Restricted class A common stock earned	1,525		5,554
Subtotal	2,077	552	18,035	2,138
Expenses of consolidated securitization vehicles	129	72	399	726
Total	$ 3,368	$ 1,615	$ 21,920	$ 6,096