Related Party Transactions - Summary of Interest Income, Other Revenues and Investment Income to Private Equity Related Funds (Detail) - Private Equity Related Funds [Member] - Affiliated Entity [Member] - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
May 31, 2016 |
May 31, 2015 |
May 31, 2016 |
May 31, 2015 |
|
| Related Party Transaction [Line Items] | ||||
| Other revenues and investment income (loss) | $ (5,064) | $ 947 | $ (7,712) | $ (24,212) |
| Service charges | $ 207 | $ 225 | $ 336 | $ 459 |