Accumulated Other Comprehensive Loss Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 0	$ 0	$ 0
Foreign currency translation adjustment	(25,461)	(21,013)
Unrealized loss on derivatives	(20)	(36)
Pension liability	(84)	(51)
Accumulated other comprehensive loss	$ (25,565)	$ (21,100)