Rialto Segment (Allowance on Loans Receivable) (Details) - Rialto - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015	May 31, 2016	Nov. 30, 2015	May 31, 2015	Nov. 30, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Allowance on nonaccrual loans, beginning of the period	$ 26,592	$ 38,383	$ 26,592	$ 38,383	$ 29,186	$ 35,625	$ 40,593	$ 58,326
Provision for loan losses	4,330	4,497	11,051	7,306
Charge-offs	(6,924)	(6,707)	(20,084)	(27,249)
Allowance on nonaccrual loans, end of the period	$ 26,592	$ 38,383	$ 26,592	$ 38,383