Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (40,643)	$ 43,460	$ (354,715)	$ 102,061
Other comprehensive income (loss), net of income taxes:
Foreign currency translation gain (loss)	161	236	(2,090)	(17)
Unrealized net gain on debt securities	0	37	195	475
Reclassification adjustment for net gains realized in net income (loss)	0	(24)	(368)	(89)
Total other comprehensive income (loss), net of income taxes	161	249	(2,263)	369
Total comprehensive income (loss)	$ (40,482)	$ 43,709	$ (356,978)	$ 102,430