Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 05, 2023	Nov. 06, 2022	Nov. 05, 2023	Nov. 06, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 70,389	$ (787)	$ (4,127)	$ (1,400)
Other comprehensive income (loss):
Unrealized net gains (losses) on available-for-sale securities	2,582	(3,656)	5,763	(15,365)
Less: reclassification adjustment for net (gains) losses on available-for-sale securities included in net income (loss)	(7)	2	(291)	(23)
Change in unrealized net gains (losses) on available-for-sale securities	2,575	(3,654)	5,472	(15,388)
Comprehensive income (loss)	$ 72,964	$ (4,441)	$ 1,345	$ (16,788)