401(k) Plan - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2021	Feb. 02, 2020	Jan. 31, 2019
Compensation Related Costs [Abstract]
Maximum annual contributions per employee (as a percent)	85.00%
Company match of employee contributions (percent)	50.00%
Maximum annual employer contribution, per employee	$ 4,000
Company contributions to the plan	$ 10,200,000	$ 8,600,000	$ 1,400,000