Earnings Per Common Share and Cash Dividends - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | |||
|---|---|---|---|---|
Feb. 16, 2016 |
Jan. 13, 2016 |
Jan. 31, 2016 |
Jan. 31, 2015 |
|
| Earnings Per Share [Line Items] | ||||
| Stock options outstanding | 0 | 0 | ||
| Cash dividend declared | $ 0.25 | $ 0.25 | ||
| Date dividend declared | Jan. 13, 2016 | |||
| Dividend payable date | Feb. 16, 2016 | |||
| Dividend payable date of record | Feb. 01, 2016 | |||
| Dividends payable | $ 1,277 | |||
| Subsequent [Member] | ||||
| Earnings Per Share [Line Items] | ||||
| Payment of dividends | $ 1,277 | |||