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