Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 39,319	$ 4,005	$ 25,260	$ 55,500
Other comprehensive income (loss), net of income taxes:
Foreign currency translation loss	(271)	(7,343)	(6,321)	(806)
Unrealized net loss on debt securities	(133)	(182)	(450)	(149)
Reclassification adjustment for net losses (gains) realized in net income	14	(26)	14,179	2,081
Total other comprehensive income (loss), net of income taxes	(390)	(7,551)	7,408	1,126
Total comprehensive income (loss)	$ 38,929	$ (3,546)	$ 32,668	$ 56,626