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Net Income per Common Share (Detail Textuals)	3 Months Ended
Net Income per Common Share (Detail Textuals)	Apr. 30, 2014	Apr. 30, 2013
Earnings Per Share [Abstract]
Common stock excluded from the diluted net income per share calculation	325,500
Common stock issued in connection with exercise or vesting of equity awards	97,687	118,170

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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