Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2022	May 01, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 813	$ 10,959
Other comprehensive income, net of tax:
Net change in unrealized gain on available-for-sale securities, net of tax	3	3
Other comprehensive income, net of tax	3	3
Comprehensive income	$ 816	$ 10,962