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Stock-Based Compensation - Additional Information (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |
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Jan. 06, 2017 USD ($) $ / shares shares | Jan. 04, 2017 director $ / shares shares | Dec. 19, 2016 $ / shares shares | Jan. 08, 2016 $ / shares shares | Jan. 04, 2016 USD ($) director $ / shares shares | Jun. 01, 2015 $ / shares shares | Feb. 06, 2015 $ / shares shares | Jan. 31, 2017 USD ($) $ / shares shares | Feb. 28, 2015 shares | Jan. 31, 2015 director $ / shares shares | Oct. 31, 2017 USD ($) $ / shares shares | Oct. 31, 2016 USD ($) | Oct. 31, 2015 USD ($) | Apr. 30, 2011 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recognized stock-based compensation expense | $ |  |  |  |  |  |  |  |  |  |  | $ 4,300 | $ 2,100 | $ 2,100 |
Stock compensation expense | $ |  |  |  |  |  |  |  |  |  |  | 4,320 | 2,134 | 2,108 |
Executive officers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total restricted shares issued to non-employee directors |  |  |  |  |  |  | 55,394 |  |  |  |  |  |  |
Restricted stock closing price awarded | $ / shares |  |  |  |  |  |  | $ 40.17 |  |  |  |  |  |  |
Stock compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  |  | 500 |
Chief Financial officer and Chief Operating officer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted shares granted |  |  |  |  |  | 12,322 |  |  |  |  |  |  |  |
Market price of common stock at grant date | $ / shares |  |  |  |  |  | $ 49.95 |  |  |  |  |  |  |  |
Stock compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  | 600 | 600 |
Unvested portion of restricted stock forfeited |  |  |  |  |  |  |  |  | 12,322 |  |  |  |  |
Chief Operating Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Market price of common stock at grant date | $ / shares | $ 58.05 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense | $ | $ 700 |  |  |  |  |  |  |  |  |  |  |  |  |
Unvested portion of restricted stock forfeited | 12,800 |  |  |  |  |  |  |  |  |  |  |  |  |
Granted | 12,800 |  |  |  |  |  |  |  |  |  |  |  |  |
Vice President [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense | $ |  |  |  |  |  |  |  |  |  |  | $ 500 |  |  |
Vested, Number of Shares |  |  |  |  |  |  |  | 13,040 |  |  |  |  |  |
Board of Director Members for January Two Thousand Seventeen Option Grants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of vested stock options |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Market price of common stock at grant date | $ / shares |  |  |  |  |  |  |  | $ 56.65 |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Estimated fair market value of options | $ |  |  |  |  |  |  |  | $ 200 |  |  |  |  |  |
Stock options total compensation cost, not yet recognized | $ |  |  |  |  |  |  |  | $ 200 |  |  |  |  |  |
Remaining service period for recognition of unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  | 60 months |  |  |
Granted |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |
Exercised, Weighted-Average Exercise Price | $ / shares |  |  |  |  |  |  |  | $ 56.65 |  |  |  |  |  |
Restricted Stock [Member] | Non-employee directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense | $ |  |  |  |  | $ 800 |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Executive officers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  | 300 |  |
2005 Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total intrinsic value of options exercised | $ |  |  |  |  |  |  |  |  |  |  | $ 100 |  |  |
Estimated fair market value of options | $ |  |  |  |  |  |  |  |  |  |  | $ 500 | $ 500 | 500 |
Exercised, Weighted-Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 14.58 |  |  |
2005 Stock Incentive Plan [Member] | Stock Options [Member] | Board of Director Members for April Two Thousand Eleven Option Grants | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of vested stock options |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |
2005 Stock Incentive Plan [Member] | Stock Options [Member] | Board of Director Members for October Two Thousand Eleven Option Grants [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of vested stock options |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |
2011 Management Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock shares authorized under ESPP |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000
Number of non-employee directors | director |  | 12 |  |  | 12 |  |  |  |  | 12 |  |  |  |
Restricted stock closing price awarded | $ / shares |  |  |  | $ 48.68 |  |  |  |  |  |  |  |  |  |
Estimated fair market value of options | $ |  |  |  |  |  |  |  |  |  |  | $ 400 |  |  |
2011 Management Incentive Plan [Member] | Non-employee directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock closing price awarded | $ / shares |  |  |  |  | $ 48.46 |  |  |  |  |  |  |  |  |
Stock price | $ / shares |  | $ 62.65 |  |  |  |  |  |  |  |  |  |  |  |
2011 Management Incentive Plan [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted shares granted per non-employee |  | 1,750 |  |  | 1,750 |  |  |  |  |  |  |  |  |
Restricted shares issued per non-employee director |  |  |  |  |  |  |  |  |  | 1,750 |  |  |  |
Total restricted shares issued to non-employee directors |  |  |  |  | 21,000 |  |  |  |  | 21,000 |  |  |  |
Restricted stock closing price awarded | $ / shares |  |  |  |  |  |  |  |  |  | $ 40.39 |  |  |  |
Restricted shares granted |  | 21,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense | $ |  |  |  |  |  |  |  |  |  |  | $ 4,300 |  |  |
Granted |  |  |  |  |  |  |  |  |  |  | 103,000 |  |  |
Vested, Number of Shares |  |  |  |  |  |  |  |  |  |  | 71,000 |  |  |
2011 Management Incentive Plan [Member] | Restricted Stock [Member] | Non-employee directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 700 |
2011 Management Incentive Plan [Member] | Restricted Stock [Member] | Executive officers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted shares granted |  |  | 70,327 |  |  |  |  |  |  |  |  |  |  |
Stock price | $ / shares |  |  | $ 56.20 |  |  |  |  |  |  |  |  |  |  |
Recognized stock-based compensation expense | $ |  |  |  |  |  |  |  |  |  |  | $ 1,100 |  |  |
Shares vesting schedule per year |  |  | $0.9 |  |  |  |  |  |  |  |  |  |  |
Unvested portion of restricted stock forfeited |  |  |  | 24,582 |  |  |  |  |  |  |  |  |  |
2011 Management Incentive Plan [Member] | Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |
Exercised, Weighted-Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 21.80 |  |  |

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