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Income Tax (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Income Tax Contingency [Line Items]    
Effective Income Tax Rate Reconciliation, Percent 28.20% 31.20%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount   $ 709
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent 300.00%  
Goodwill Income Tax, Amortization Period 15 years  
CANADA    
Income Tax Contingency [Line Items]    
Undistributed Earnings of Foreign Subsidiaries $ 1,720  
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries $ 270