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Shareholders' Equity (Details) (USD $)
0 Months Ended 3 Months Ended 6 Months Ended
Dec. 06, 2012
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Apr. 30, 2012
Oct. 31, 2012
Stock repurchase program, number of shares authorized to be repurchased   320,000   320,000    
Purchase and retire percentage of shares in common stock outstanding   4.90%   4.90%    
Outstanding common stock remaining to purchase under plan   123,500   123,500    
Common stock, shares outstanding   6,243,206   6,243,206   6,411,592
Cash dividends declared per common share $ 0.02 $ 0.02 $ 0.015 $ 0.04 $ 0.03  
Dividends payable, amount $ 124,994          
Minimum [Member]
           
Period of the repurchase       12 months    
Maximum [Member]
           
Period of the repurchase       24 months