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Employee Stock Compensation (Details) (USD $)
 3 Months Ended
Apr. 30, 2013
Jan. 31, 2013
Number of Shares, Outstanding at January 31, 2013 24,000  
Number of Shares, Granted during the three months ended April 30, 2013 0  
Number of Shares, Outstanding at April 30, 2013 24,000 24,000
Number of Shares, Exercisable at April 30, 2013 24,000  
Number of Shares, Reserved for future issuance, Directors' Plan (expired on December 31, 2012) 0  
Number of Shares, Directors' Plan (Expired on December 31, 2012) 0  
Weighted Average Exercise Price per Share, Outstanding at January 31, 2013 $ 7.47  
Weighted Average Exercise Price per Share, Granted during the three months ended April 30, 2013 $ 0  
Weighted Average Exercise Price per Share, Outstanding at April 30, 2013 $ 7.47 $ 7.47
Weighted Average Exercise Price per Share, Exercisable at April 30, 2013 $ 7.47  
Weighted Average Remaining Contractual Term, Outstanding at January 31, 2013 3 years 8 months 12 days 3 years 11 months 12 days
Weighted Average Remaining Contractual Term, Exercisable at April 30, 2013 3 years 8 months 12 days  
Aggregate Intrinsic Value, Outstanding at January 31, 2013 $ 1,300  
Aggregate Intrinsic Value, Granted during the three months ended April 30, 2013 $ 0  
Aggregate Intrinsic Value, Outstanding at Outstanding at April 30, 2013 0 1,300
Aggregate Intrinsic Value, Exercisable at April 30, 2013 $ 0