Net Income (Loss) per Common Share (Detail Textuals) - shares shares in Thousands	9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Earnings Per Share [Abstract]
Common stock excluded from the diluted net income per share calculation	377
Common stock issued in connection with exercise or vesting of equity awards	194,618	262,830
Additional diluted common shares being included in diluted net income per share calculation	250,000