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Net Income (Loss) per Common Share (Detail Textuals) - shares
6 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Earnings Per Share [Abstract]    
Common stock excluded from the diluted net income per share calculation 349,000  
Common stock issued in connection with exercise or vesting of equity awards 195,156 262,830
Additional diluted common shares being included in diluted net income per share calculation 303,000