Stock-Based Compensation - Additional Information (Detail) (USD $)
|
12 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 3 Months Ended | 0 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2011
|
Jan. 26, 2013
|
May 01, 2012
|
Oct. 31, 2013
Stock Option [Member]
|
Oct. 31, 2011
Stock Option [Member]
|
Oct. 31, 2012
Restricted Stock [Member]
|
Oct. 31, 2013
Restricted Stock [Member]
|
Apr. 30, 2011
2005 Stock Incentive Plan [Member]
|
Oct. 31, 2013
2005 Stock Incentive Plan [Member]
|
Oct. 31, 2012
2005 Stock Incentive Plan [Member]
|
Oct. 31, 2011
2005 Stock Incentive Plan [Member]
|
Jul. 31, 2013
2005 Stock Incentive Plan [Member]
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
Maximum [Member]
|
Jul. 31, 2013
2005 Stock Incentive Plan [Member]
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
Minimum [Member]
|
Jul. 31, 2013
2005 Stock Incentive Plan [Member]
Stock Options [Member]
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
Maximum [Member]
|
Jul. 31, 2013
2005 Stock Incentive Plan [Member]
Stock Options [Member]
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
Minimum [Member]
|
Jan. 26, 2013
2011 Management Incentive Plan [Member]
Directors
|
Jan. 28, 2013
2011 Management Incentive Plan [Member]
Directors
|
Oct. 31, 2012
2011 Management Incentive Plan [Member]
|
Apr. 30, 2011
2011 Management Incentive Plan [Member]
|
Oct. 31, 2013
2011 Management Incentive Plan [Member]
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
|
Oct. 31, 2011
2011 Management Incentive Plan [Member]
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
|
Apr. 30, 2011
2011 Management Incentive Plan [Member]
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
|
Oct. 31, 2012
2011 Management Incentive Plan [Member]
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
|
Oct. 31, 2011
2011 Management Incentive Plan [Member]
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
|
Jan. 26, 2013
2011 Management Incentive Plan [Member]
Employee Stock [Member]
|
Jan. 28, 2013
2011 Management Incentive Plan [Member]
Employee Stock [Member]
|
Oct. 31, 2013
2011 Management Incentive Plan [Member]
Stock Option [Member]
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
|
Oct. 31, 2011
2011 Management Incentive Plan [Member]
Stock Option [Member]
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
|
Apr. 30, 2011
2011 Management Incentive Plan [Member]
Stock Option [Member]
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
|
Jan. 26, 2013
2011 Management Incentive Plan [Member]
Restricted Stock [Member]
|
Jan. 28, 2013
2011 Management Incentive Plan [Member]
Restricted Stock [Member]
|
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||||||||||||||||
Stock options vesting period | 5 years | 1 year | 5 years | 5 years | 1 year | ||||||||||||||||||||||||||||
Term of vested stock options | 5 years | 2 years | 5 years | 5 years | 1 year | ||||||||||||||||||||||||||||
weighted average remaining life of stock options | 6 years 7 months 6 days | 4 years 6 months | |||||||||||||||||||||||||||||||
Total intrinsic value of options exercised | $ 100,000 | ||||||||||||||||||||||||||||||||
Exercisable stock options, weighted average remaining contractual term | 4 years 6 months | 4 years 1 month 6 days | |||||||||||||||||||||||||||||||
Estimated fair market value of options | 100,000 | 100,000 | 100,000 | 600,000 | 300,000 | 700,000 | 100,000 | 200,000 | |||||||||||||||||||||||||
Stock options total compensation cost, not yet recognized | 100,000 | 100,000 | 100,000 | ||||||||||||||||||||||||||||||
Common stock shares authorized under ESPP | 1,500,000 | 10,000 | 10,000 | 60,000 | |||||||||||||||||||||||||||||
Common stock shares purchased under ESPP | 0 | ||||||||||||||||||||||||||||||||
Stock options granted to non-employee director | 5,000 shares | ||||||||||||||||||||||||||||||||
Exercise price of stock options granted to non-employee director | $ 23.48 | $ 21.80 | $ 21.82 | ||||||||||||||||||||||||||||||
Market price of common stock at grant date | $ 23.48 | $ 21.80 | $ 21.82 | ||||||||||||||||||||||||||||||
Remaining service period for recognition of unrecognized compensation cost | 60 months | 60 months | |||||||||||||||||||||||||||||||
Number of non-employee directors | 12 | 12 | |||||||||||||||||||||||||||||||
Restricted shares issued per non-employee director | 1,000 | 1,000 | |||||||||||||||||||||||||||||||
Total restricted shares issued to non-employee directors | 12,000 | 12,000 | |||||||||||||||||||||||||||||||
Restricted stock closing price awarded to non-employee director | $ 24.71 | $ 27.68 | |||||||||||||||||||||||||||||||
Stock compensation expense | 376,000 | 417,000 | 188,000 | 200,000 | 200,000 | ||||||||||||||||||||||||||||
Share-based compensation arrangement by share-based payment award, options, vested and expected to vest, exercisable, number | 11,000 | 1,000 | |||||||||||||||||||||||||||||||
Total intrinsic value of options exercised | $ 300,000 |