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Stock-Based Compensation (Details Textual) (USD $)
 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Jan. 11, 2012
Oct. 31, 2012
Employee Stock [Member]
Participant
Oct. 31, 2011
Stock Options [Member]
Oct. 31, 2012
Restricted Stock [Member]
Apr. 30, 2011
2005 Stock Incentive Plan [Member]
Oct. 31, 2012
2005 Stock Incentive Plan [Member]
Oct. 31, 2011
2005 Stock Incentive Plan [Member]
Oct. 31, 2010
2005 Stock Incentive Plan [Member]
Oct. 31, 2012
2011 Management Incentive Plan [Member]
Oct. 31, 2012
2011 Management Incentive Plan [Member]
Directors
Apr. 30, 2011
2011 Management Incentive Plan [Member]
Apr. 30, 2011
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]
Oct. 31, 2011
2011 Management Incentive Plan [Member]
Board Of Director Members For October Two Thousand Eleven Option Grants [Member]
Oct. 31, 2012
2011 Management Incentive Plan [Member]
Board Of Director Members For October Two Thousand Eleven Option Grants [Member]
Oct. 31, 2012
2011 Management Incentive Plan [Member]
Employee Stock [Member]
Apr. 30, 2011
2011 Management Incentive Plan [Member]
Stock Options [Member]
Board Of Director Members For April Two Thousand Eleven Option Grants [Member]
Oct. 31, 2011
2011 Management Incentive Plan [Member]
Stock Options [Member]
Board Of Director Members For October Two Thousand Eleven Option Grants [Member]
Oct. 31, 2012
2011 Management Incentive Plan [Member]
Restricted Stock [Member]
Share-Based Compensation (Textual) [Abstract]                                            
Granted, Weighted-Average Exercise Price $ 21.82                   $ 19.20           $ 21.80          
Common stock shares authorized under ESPP         2,000,000                 1,500,000           60,000 10,000  
Common stock shares available for grant under ESPP         474,000                                  
Share Price         $ 7.00                                  
ESPP share based awards expiration month year         2002-04                                  
Number of employees participating in ESPP         84                                  
Common stock shares purchased under ESPP         279,000     0                            
Options granted to each director 70,000                   10,000                      
Stock options vesting period                                       1 year 5 years  
Restricted stock closing price awarded to non employee director                       $ 27.68                    
Term of vested stock options                             1 year   5 years          
Market price of common stock at grant date                             $ 21.82   $ 21.80          
Estimated fair market value of options                 $ 300,000 $ 700,000 $ 700,000   $ 1,000,000     $ 200,000   $ 100,000        
Stock options total compensation cost, not yet recognized 100,000         100,000                                
Remaining service period for recognition of unrecognized compensation cost 45 months         60 months                                
weighted average remaining life of stock options                 5 years 2 months 12 days       1 year 8 months 12 days                  
Exercisable stock options, weighted-average remaining contractual term                 4 years 1 month 6 days       7 months 6 days                  
Total intrinsic value of options exercised                 400,000                          
Stock options granted to non employee director                                       5000 shares    
Exercise price of stock options granted to non employee director                                       $ 21.82    
Stock option shares vested                 13,000     42,000 42,000                  
Number of non-employee directors                         12                  
Total restricted shares issued to Non-employee Directors                                           12,000
Stock compensation expense $ 417,000 $ 188,000 $ 52,000       $ 200,000                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number 11,000     1,000                                    
Restricted shares issued per Non employee director                                     1,000