Fair Value Disclosures - Summary of Amount by Which Contractual Principal Exceeds Fair Value for Loans and Other Receivables Measured at Fair Value under Fair Value Option (Detail) (USD $) In Thousands, unless otherwise specified	May 31, 2014	Nov. 30, 2013
Financial Instruments Owned:
Loans and other receivables	$ 276,420	$ 264,896
Loans greater than 90 days past due