Loans Receivable - Activity Related to Loans Receivable (Detail) - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2014	Jul. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Balance at beginning of year		$ 101,100	$ 24,005	$ 101,100
Purchase and advances				35,992
Interest received, net			(190)	(283)
Repayments / sale proceeds / forgiveness			(18,535)	(120,194)	$ (75,407)
Loan discount accretion		2,086		2,086	4,121
Discount accretion received in cash		$ (5,865)		(5,865)	(37)
Liquidation adjustment				6,071
Change in liquidation value	$ 5,098		(410)	5,098
Balance at end of year	$ 24,005		$ 5,280	$ 24,005	$ 101,100