Income Taxes (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Schedule of reconciliation of beginning and ending amounts of gross unrecognized tax benefits
Beginning balance	$ 2,619	$ 2,481	$ 2,657
Additions for tax positions taken in the current year	180	142	175
Tax positions taken in prior years	148
Lapse of statute of limitations	(630)		(311)
Settlements	(149)
Non U.S. currency exchange fluctuations	186	(4)	(40)
Ending balance	$ 2,354	$ 2,619	$ 2,481