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Stock-Based Compensation - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Maximum number of common shares available for grant | 2,900 |  |
Periods of performance considered for calculating compensation expense | 3 years |  |
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% |  |
Number of common shares reserved for future issuance | 2,664,000 |  |
Directors [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Expense related to director deferred compensation | $ 158,000 | $ 91,000 | $ 101,000
Stock Options [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Options exercisable beginning period | 1 year |  |
Maximum rate of stock option, description | Not exceeding 25 percent per year |  |
Option expiring period | 10 years |  |
Compensation expense recognized | $ 7,874,000 | $ 8,772,000 | $ 10,251,000
Unrecognized compensation cost related to nonvested stock option | $ 5,498,000 |  |
Weighted average period expected to be amortized, non vested shares | 1 year 7 months 6 days |  |
Weighted-average expected volatility used | 29.60% | 34.30% | 44.50%
Weighted average grant date fair value of stock options granted | $ 18.23 | $ 24.63 | $ 27.92
Total intrinsic value of options exercised | $ 17,271,000 | $ 10,406,000 | $ 17,223,000
Cash received from the exercise of stock options | 11,476,000 | 5,372,000 | 7,013,000
Tax benefit realized from tax deductions from exercises of stock options | $ 3,476,000 | 3,661,000 | 6,385,000
Stock Options [Member] | Maximum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Maximum rate of stock option | 25.00% |  |
Stock Options [Member] | Post November 2012 Option Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Normal retirement age | 65 years |  |
Period for options considered to be forfeited for retirees | 12 months |  |
Restricted Shares and Restricted Share Units [Member] | Maximum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Grant restricted shares transferred period | 3 years |  |
Restricted Shares and Restricted Share Units [Member] | Minimum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Grant restricted shares transferred period | 1 year |  |
Restricted Stock [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
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 |  |
Unrecognized compensation cost related to nonvested restricted stock | $ 2,115,000 |  |
Expense related to nonvested common shares | 1,963,000 | 1,840,000 | 1,784,000
Common share dividends amount included in compensation cost | $ 60,000 | 51,000 | 52,000
Restricted Stock Unit [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Period for pro-rata vesting of shares or units for non-employee directors | 1 year |  |
Unrecognized compensation cost related to nonvested restricted stock | $ 0 |  |
Expense related to nonvested common shares | $ 974,000 | $ 972,000 | $ 890,000
Performance Share Incentive Awards [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Periods of performance considered for calculating compensation expense | 3 years |  |
Weighted average grant date fair value | $ 67.69 | $ 76.48 | $ 69.25
Compensation expense | $ 7,083,000 | $ 3,459,000 | $ 4,304,000
Cumulative amount recorded in shareholders' equity related to Long-Term Incentive Plan | 10,951,000 | 7,561,000 |
Deferred Compensation [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common share dividends amount included in compensation cost | $ 219,000 | $ 179,000 | $ 129,000
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% |  |

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