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Employee Stock Compensation (Details) (USD $)
 9 Months Ended 12 Months Ended
Oct. 31, 2012
Jan. 31, 2012
Number of Shares, Outstanding at January 31, 2012 18,200  
Number of Shares, Granted during the nine months ended October 31, 2012 10,000  
Number of Shares, Forfeited during the nine months ended October 31, 2012 4,200  
Number of Shares, Outstanding at October 31, 2012 24,000 18,200
Number of Shares, Exercisable at October 31, 2012 24,000  
Number of Shares, Directors' Plan 21,300  
Weighted Average Exercise Price per Share, Outstanding at January 31, 2012 $ 7.31  
Weighted Average Exercise Price per Share, Granted during the nine months ended October 31, 2012 $ 6.44  
Weighted Average Exercise Price per Share, Forfeited during the nine months ended October 31, 2012 $ 10.67  
Weighted Average Exercise Price per Share, Outstanding at October 31, 2012 $ 7.47 $ 7.31
Weighted Average Exercise Price per Share, Exercisable at October 31, 2012 $ 7.47  
Weighted Average Remaining Contractual Term, Outstanding 4 years 2 months 12 days 3 years 4 months 17 days
Weighted Average Remaining Contractual Term, Granted during the nine months ended October 31, 2012 5 years 7 months 28 days  
Weighted Average Remaining Contractual Term, Forfeited during the nine months ended October 31, 2012 0 years  
Weighted Average Remaining Contractual Term, Exercisable at October 31, 2012 4 years 2 months 12 days  
Aggregate Intrinsic Value, Outstanding at January 31, 2012 $ 10,230  
Aggregate Intrinsic Value, Granted during the nine months ended October 31, 2012 100  
Aggregate Intrinsic Value, Forfeited during the nine months ended October 31, 2012 0  
Aggregate Intrinsic Value, Outstanding at October 31, 2012 1,300 10,230
Aggregate Intrinsic Value, Exercisable at October 31, 2012 $ 1,300