Stock Repurchase Program - Summary of Stock Repurchase Activities (Details) - USD ($) $ in Thousands	12 Months Ended			154 Months Ended
	Jan. 31, 2021	Jan. 26, 2020	Jan. 27, 2019	Jan. 31, 2021
Equity, Class of Treasury Stock [Line Items]
Repurchased shares of common stock, cost	$ 71,433	$ 70,219	$ 116,210	$ 409,200
Shares repurchased under the 2011 program
Equity, Class of Treasury Stock [Line Items]
Repurchases (in shares)	1,597,104	1,471,703	2,448,133
Repurchased shares of common stock, cost	$ 71,433	$ 70,219	$ 116,210