Income Tax (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Percent	26.90%	13.90%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount		$ 0
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Undistributed Earnings of Foreign Subsidiaries	$ 2,365
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	$ 270