Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 06, 2023	Aug. 07, 2022	Aug. 06, 2023	Aug. 07, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (7,115)	$ 10,922	$ (74,516)	$ (613)
Other comprehensive income (loss):
Unrealized net gains (losses) on available-for-sale securities	(1,685)	(1,222)	3,181	(11,709)
Less: reclassification adjustment for net gains on available-for-sale securities included in net income (loss)	(16)	(32)	(284)	(25)
Change in unrealized net gains (losses) on available-for-sale securities	(1,701)	(1,254)	2,897	(11,734)
Comprehensive income (loss)	$ (8,816)	$ 9,668	$ (71,619)	$ (12,347)