Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2018	Oct. 29, 2017	Oct. 28, 2018	Oct. 29, 2017
Net income	$ 12,165	$ 13,338	$ 49,716	$ 37,723
Other comprehensive income, net:
Unrealized gain on convertible debt	0	0	0	750
Release of realized gain on convertible debt	0	0	0	(750)
Change in employee benefit plans	(16)	22	(48)	65
Other comprehensive income (loss), net	3	(631)	(121)	158
Comprehensive income	12,168	12,707	49,595	37,881
Foreign Exchange Contract [Member]
Other comprehensive income, net:
Unrealized gain (loss) on foreign currency cash flow hedges	8	(144)	(109)	865
Realized gain (loss) on foreign currency cash flow hedges	$ 11	$ (509)	$ 36	$ (772)