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	Nov. 30, 2015	Nov. 30, 2014
Financial instruments owned:
Loans and other receivables	$ 408,369	$ 403,119
Loans and other receivables greater than 90 days past due	29,720	5,594
Loans and other receivables on nonaccrual status	$ 54,652	$ (22,360)