Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 30, 2021	Jan. 25, 2020	Jan. 26, 2019
Income Tax Disclosure [Abstract]
Statutory rate applied to pre-tax income	$ 12,436	$ 16,495	$ 18,488
State taxes, net of federal tax benefit	4,344	4,282	4,004
Non-deductible goodwill impairment	10,411	0	0
Compensation limitation	2,632	82	884
Non-deductible and non-taxable items, net	808	1,351	1,549
Federal deficiency (benefit) of vesting and exercise of share-based awards	(436)	875	(200)
Tax credits	(3,145)	(2,801)	(1,835)
Tax Reform and related effects	(2,631)	1,093	0
Change in accruals for uncertain tax positions	1,189	891	464
Change in valuation allowance	1	722	291
Effect of rates other than statutory	(4)	(197)	1,537
Other items, net	(725)	(1,472)	(51)
Provision for income taxes	$ 24,880	$ 21,321	$ 25,131

Effective Income Tax Rate Reconciliation, Change in Accrual For Uncertain Tax Positions

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Effective Income Tax Rate Reconciliation, Compensation Limitation, Amount

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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