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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 27, 2020 | Dec. 29, 2019 | Mar. 31, 2019
--- | --- | --- | ---
Deferred tax assets: |  |  |
Net operating loss carryforwards | $ 14,364 | $ 3,721 |
Accrued liabilities | 2,152 | 848 |
Deferred revenue | 573 | 423 |
Stock-based compensation | 1,993 | 2,516 |
Property and equipment | 3,505 | 4,568 |
Operating lease liabilities | 59,230 | 62,313 |
Tax credits and other carryforwards | 2,319 | 1,538 |
Gross deferred tax assets | 84,136 | 75,927 |
Valuation allowance | (30,381) | (16,116) | $ (13,600)
Net deferred tax assets | 53,755 | 59,811 |
Deferred tax liabilities: |  |  |
Prepaids | (285) | (492) |
Right-of-use asset for operating leases | (51,637) | (57,717) |
Intangible assets | (1,249) | (1,162) |
Smallwares | (482) | (533) |
Other | (348) | (134) |
Total deferred tax liabilities | (54,001) | (60,038) |
Net deferred tax liabilities | $ 246 | $ 227 |

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