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Stock Based Compensation (Details)
shares in Millions
9 Months Ended
Oct. 31, 2015
USD ($)
shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars) | $ $ 900,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 255 days
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 8.0
Share Based Compensation Arrangement By Share Based Payment Award Options And Other Than Options Outstanding Number 2.4
Share Based Compensation Arrangement By Share Based Payment Award Options And Other Than Options Vested And Expected To Vest Exercisable Number 1.5
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2.1
Intrinsic Value of Stock Awards Outstanding (in Dollars) | $ $ 842,000
Intrinsic Value of Stock Awards Exercisable (in Dollars) | $ $ 625,000