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v3.20.4

Reconciliations to Statutory Rates (Detail) | 12 Months Ended
--- | ---
Dec. 26, 2020 | Dec. 28, 2019 | Dec. 29, 2018
Income Tax Disclosure [Abstract] |  |  |
Statutory rate | 21.00% | 21.00% | 21.00%
State income taxes, net of federal benefit | 4.40% | 4.60% | 4.60%
Deduction relating to excess stock based compensation | (4.30%) | (3.20%) | (3.60%)
Non-deductable meals & entertainment | 0.20% | 0.70% | 1.10%
Accounting method changes |  |  | (3.90%)
Change in valuation allowance | 0.10% | 0.40% | 0.70%
Other |  | 0.30% | 0.40%
Effective Income Tax Rate Reconciliation, Percent, Total | 21.40% | 23.80% | 20.30%

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