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Stock-Based Compensation (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified
 9 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 1 Months Ended 3 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Apr. 30, 2011
2005 Stock Incentive Plan [Member]
Jul. 31, 2013
2005 Stock Incentive Plan [Member]
Jan. 28, 2013
2011 Management Incentive Plan [Member]
Directors
Jul. 31, 2013
2011 Management Incentive Plan [Member]
Apr. 30, 2011
2011 Management Incentive Plan [Member]
Jan. 28, 2013
2011 Management Incentive Plan [Member]
Employee Stock [Member]
Jul. 31, 2013
2011 Management Incentive Plan [Member]
Stock Option [Member]
Jul. 31, 2013
2011 Management Incentive Plan [Member]
Stock Option [Member]
Jan. 28, 2013
2011 Management Incentive Plan [Member]
Restricted Stock [Member]
Jul. 31, 2013
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
Minimum [Member]
2011 Management Incentive Plan [Member]
Jul. 31, 2013
Board of Director Members for April Two Thousand Eleven Option Grants [Member]
Minimum [Member]
2011 Management Incentive Plan [Member]
Stock Option [Member]
Jul. 31, 2013
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
Maximum [Member]
2011 Management Incentive Plan [Member]
Jul. 31, 2013
Board of Director Members for October Two Thousand Eleven Option Grants [Member]
Maximum [Member]
2011 Management Incentive Plan [Member]
Stock Option [Member]
Stock-Based Compensation (Textual) [Abstract]                              
Common stock shares authorized under ESPP             1,500,000                
Common stock shares purchased under ESPP     0                        
Stock options vesting period                         1 year   5 years
Restricted stock closing price awarded to non-employee director         $ 24.71                    
Term of vested stock options                       2 years   5 years  
Weighted-average remaining life of stock options       4 years 7 months 6 days   6 years 10 months 24 days                  
Exercisable stock options, weighted-average remaining contractual term       4 years 2 months 12 days   4 years 2 months 12 days                  
Number of non-employee directors         12                    
Total restricted shares issued to non-employee directors                     12,000        
Stock-based compensation expense $ 288 $ 324             $ 100 $ 300          
Restricted shares issued per non-employee director               1,000