Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 31,194	$ 24,297
Other comprehensive income (loss), net of income taxes:
Foreign currency translation loss	(714)	(4,685)
Unrealized net gain (loss) on debt securities	242	(344)
Reclassification adjustment for net losses (gains) realized in net income	(88)	1,905
Total other comprehensive loss, net of income taxes	(560)	(3,124)
Total comprehensive income	$ 30,634	$ 21,173