Loans Receivable - Interest and Discount Accretion Income (Detail) - USD ($) $ in Thousands	1 Months Ended	7 Months Ended	9 Months Ended
	Jul. 31, 2014	Jul. 31, 2014	Sep. 30, 2014
Receivables [Abstract]
Interest on loan assets	$ 899	$ 5,770
Exit fee/prepayment penalty		1,787
Accretion of loan discount	495	2,086	$ 2,086
Total interest and discount accretion	$ 1,394	$ 9,643