Variable Interest Entities - Summary of Carrying Amounts of Consolidated VIE Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Assets
Loans and finance receivables, net	$ 428,202	$ 434,633	$ 279,055
Restricted cash and cash equivalents	20,908	7,379	7,410
Liabilities
Accounts payable and accrued expenses	74,278	$ 72,141	$ 54,175
Variable Interest Entity, Primary Beneficiary
Assets
Loans and finance receivables, net	138,255
Restricted cash and cash equivalents	13,717
Total assets	151,972
Liabilities
Accounts payable and accrued expenses	591
Long-term debt	110,199
Total liabilities	$ 110,790