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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum number of common shares authorized for grant | 900,000 |  | 900,000 |
Number of common shares available for grant | 2,208,000 |  | 2,208,000 |
Executive officers and other highly compensated employees salary and annual cash incentive compensation deferrals percentage, maximum |  |  | 100.00% |
Executive officers share-based long-term incentive compensation deferrals percentage, maximum |  |  | 90.00% |
Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Option expiring period |  |  | 10 years |
Normal retirement age |  |  | 65 years |
Period for options considered to be forfeited for retirees |  |  | 12 months |
Termination period on death or disability of option holder |  |  | 12 months |
Compensation expense recognized | $ 1,565 | $ 2,538 | $ 3,801 | $ 5,263
Unrecognized compensation cost related to unvested stock option | 12,291 |  | $ 12,291 |
Weighted average period expected to be amortized, non vested shares |  |  | 1 year 8 months 12 days |
Weighted-average expected volatility used |  |  | 31.00% | 25.10%
Weighted average grant date fair value of stock options granted |  |  | $ 56.02 | $ 37.81
Total intrinsic value of options exercised | 12,166 | 1,704 | $ 17,601 | $ 18,948
Cash received from the exercise of stock options |  |  | $ 18,783 | 18,547
Stock Options | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum rate of stock option |  |  | 25.00% |
Restricted Shares and Restricted Share Units | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grant restricted shares transferred period |  |  | 1 year |
Restricted Shares and Restricted Share Units | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grant restricted shares transferred period |  |  | 3 years |
Restricted Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Normal retirement age |  |  | 65 years |
Weighted average period expected to be amortized, non vested shares |  |  | 1 year 8 months 12 days |
Period for restricted shares and share units considered to be forfeited for retirees |  |  | 12 months |
Restricted shares termination period for disability or death |  |  | 12 months |
Unrecognized compensation cost related to nonvested restricted stock | 2,655 |  | $ 2,655 |
Expense related to nonvested common shares | 501 | 688 | 1,465 | 2,261
Common share dividends amount included in compensation cost | 13 | 18 | $ 31 | 43
Restricted Stock Unit |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Weighted average period expected to be amortized, non vested shares |  |  | 1 year 4 months 24 days |
Unrecognized compensation cost related to nonvested restricted stock | 11,639 |  | $ 11,639 |
Expense related to nonvested common shares | 2,192 | 298 | $ 4,284 | 584
Performance Share Incentive Awards |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award requisite service period |  |  | 3 years |
Compensation expense | (460) | (3,703) | $ 4,295 | $ (2,282)
Cumulative amount recorded in shareholders' equity related to Long-Term Incentive Plan | 4,132 |  | $ 4,132 |
Performance Share Incentive Awards | November 23, 2020 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Weighted average grant date fair value |  |  | $ 202.05 | $ 201.50
Deferred Compensation |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Executive officers and other highly compensated employees salary and annual cash incentive compensation deferrals percentage, maximum |  |  | 100.00% |
Executive officers share-based long-term incentive compensation deferrals percentage, maximum |  |  | 90.00% |
Common share dividends amount included in compensation cost | 29 | 83 | $ 58 | $ 164
Deferred Compensation | Directors |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Expense related to director deferred compensation | $ 63 | $ 42 | $ 125 | $ 86

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