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Employee Benefits (Narrative) (Details) (USD $)
 12 Months Ended 1 Months Ended 12 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2013
Restricted Stock Awards [Member]
Oct. 31, 2012
Restricted Stock Awards [Member]
Oct. 31, 2011
Restricted Stock Awards [Member]
Oct. 31, 2013
Restricted Stock Awards [Member]
Maximum [Member]
Mar. 31, 2005
2005 Stock Incentive Plan [Member]
Mar. 31, 2011
2011 Stock Incentive Plan [Member]
Mar. 31, 2013
Amended 2011 Plan [Member]
Oct. 31, 2013
Amended 2011 Plan [Member]
Oct. 31, 2013
Non-employee Directors Stock Plan [Member]
Oct. 31, 2013
Non-employee Directors Stock Plan [Member]
Restricted Stock Awards [Member]
Oct. 31, 2012
Non-employee Directors Stock Plan [Member]
Restricted Stock Awards [Member]
Oct. 31, 2011
Non-employee Directors Stock Plan [Member]
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Health insurance coverage expense $ 3,999,078 $ 3,303,968 $ 3,073,366                        
Matching 401(k) contributions 130,361 229,417 83,245                        
Shares authorized and reserved for common stock issuance (shares)               1,000,000 500,000     250,000      
Additional shares authorized (shares)                   500,000          
Shares available for grant (shares)                     395,000 29,000      
Share-based compensation expense 971,145 1,440,534 893,354                        
Share-based compensation expense for employees       817,657 1,287,271 746,431                  
Compensation cost related to unvested equity-based compensation, period (in years)       3 years 4 months 24 days                      
Compensation cost related to unvested equity-based compensation             2,200,000                
Restricted share grants (shares)                         36,632 44,424 30,356
Restricted period                         6 months    
Share-based compensation expense for non-employee directors                         $ 153,488 $ 153,263 $ 146,923