Summary of Significant Accounting Policies (Detail) |
6 Months Ended |
|---|---|
May 31, 2016 | |
| Property, Plant and Equipment [Line Items] | |
| More than percentage of tax benefit realized upon ultimate settlement with taxing authority | 50.00% |
| Minimum [Member] | |
| Property, Plant and Equipment [Line Items] | |
| Useful life of premises and equipment | 3 years |
| Maximum [Member] | |
| Property, Plant and Equipment [Line Items] | |
| Useful life of premises and equipment | 10 years |