Employee Benefit Plans (Details) (USD $)
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Profit Sharing and Savings Plan      
Maximum 401K employer match contribution $ 1,040    
Maximum profit sharing contribution percentage 15.00%    
Maximum employer profit sharing contribution 36,750    
Profit sharing and savings plan expense 17,500,000 16,800,000 15,300,000
Supplemental Profit Sharing Retirement Plan      
Supplemental Profit Sharing Retirement Plan expense recognized by the Company $ 36,294 $ 16,243 $ 49,649