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Cost Savings Initiatives (Details) - Cost Savings Initiatives
$ in Thousands
 6 Months Ended
Jul. 31, 2018
USD ($)
Restructuring Cost And Reserve [Line Items]  
Balance at January 31, 2018 $ 1,924
Cash payments (804)
Foreign exchange (54)
Balance in Accrued Liabilities at July 31, 2018 1,066
Severance and Payroll Related  
Restructuring Cost And Reserve [Line Items]  
Balance at January 31, 2018 931
Cash payments (601)
Balance in Accrued Liabilities at July 31, 2018 330
Other  
Restructuring Cost And Reserve [Line Items]  
Balance at January 31, 2018 919
Cash payments (181)
Foreign exchange (50)
Balance in Accrued Liabilities at July 31, 2018 688
Occupancy Charges  
Restructuring Cost And Reserve [Line Items]  
Balance at January 31, 2018 74
Cash payments (22)
Foreign exchange (4)
Balance in Accrued Liabilities at July 31, 2018 $ 48