Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Oct. 25, 2020	Jan. 26, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts, receivables	$ 586	$ 633
Accumulated depreciation	$ 229,514	$ 214,787
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	78,136,144	78,136,144
Common stock, shares outstanding (in shares)	64,966,293	65,758,115
Treasury stock (in shares)	13,169,851	12,378,029

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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