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	May 31, 2017	Nov. 30, 2016
Financial instruments owned:
Loans and other receivables	$ 649,320	$ 1,325,938
Loans and other receivables on nonaccrual status and/or greater than 90 days past due	170,969	205,746
Long-term debt	5,116	20,202
Loans and other receivables greater than 90 days past due	$ 68,200	$ 64,600