Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Feb. 06, 2022	Jan. 31, 2021	Feb. 02, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (143,259)	$ (282,076)	$ (200,987)
Other comprehensive income (loss), net of tax:
Unrealized net gains (losses) on available-for-sale securities	(15,107)	3,213	6,510
Reclassification adjustment for net gains on available-for-sale securities included in net loss	(668)	(1,252)	(723)
Change in unrealized net gains (losses) on available-for-sale securities	(15,775)	1,961	5,787
Comprehensive loss	$ (159,034)	$ (280,115)	$ (195,200)