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Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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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

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