Loans Receivable - Activity Related to Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended	7 Months Ended	9 Months Ended
	Jul. 31, 2014	Sep. 30, 2013	Jul. 31, 2014	Sep. 30, 2014	Sep. 30, 2013
Receivables [Abstract]
Balance at beginning of period			$ 101,100	$ 101,100
Purchase and advances				35,992
Interest (received) accrued, net				(81)
Repayments/sale proceeds/forgiveness				(81,739)
Loan discount accretion	495	806	2,086	2,086	2,283
Discount accretion received in cash			(5,865)	(5,865)	(37)
Liquidation adjustment				6,071
Change in liquidation value				4,750
Balance at end of period				$ 62,314