Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 26, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 721	$ 633
Accumulated depreciation	$ 233,779	$ 214,787
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	78,136,144	78,136,144
Common stock, shares outstanding	65,098,379	65,758,115
Treasury stock, at cost, shares	13,037,765	12,378,029