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Income Taxes (Details) - USD ($) $ in Thousands | 4 Months Ended
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Jan. 19, 2020 | Jan. 20, 2019
Income Tax Disclosure [Abstract] |  |
Income tax expense at statutory rate, amount | $ 2,868 | $ 10,434
Income tax expense at statutory rate (percent) | 26.00% | 25.80%
Stock compensation tax deficiency (excess tax benefit) | $ 196 | $ (50)
Stock compensation tax deficiency (excess tax benefit) (percent) | 1.80% | (0.10%)
Company-owned life insurance policies | $ (99) | $ 231
Company-owned life insurance policies (percent) | (0.90%) | 0.60%
Adjustment to state tax provision | $ 0 | $ (1,027)
Adjustment to state tax provision (percent) | 0.00% | (2.60%)
Other, amount | $ 168 | $ (215)
Other (percent) | 1.50% | (0.50%)
Effective income tax rate, amount | $ 3,133 | $ 9,373
Effective income tax rates, percent | 28.40% | 23.10%

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