Other Assets and Liabilities - Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Accrued compensation	$ 17,527	$ 19,273
Guarantee obligations	22,704	7,201
Margin payable	6,415	6,455
Residential loans repurchase reserve	6,403	3,724
Current accounts payable	4,764	2,112
Legal reserve	2,000	2,000
Accrued operating expenses	1,845	3,334
Other	8,239	8,145
Total Other Liabilities	$ 69,897	$ 52,244