Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Income Tax Contingency [Line Items]
Total unrecognized tax benefits that, if recognized, would affect the company's effective tax rate	$ 1,655	$ 1,617	$ 3,029
Accrued interest and penalties related to unrecognized tax benefits	672	$ 952	$ 1,897
United States [Member]
Income Tax Contingency [Line Items]
Pre-tax book income, domestic	3,279
Canada [Member]
Income Tax Contingency [Line Items]
Pre-tax book income, foreign	802
Undistributed earnings	1,975
Estimated tax liability	$ 319