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Income Taxes - Temporary Differences (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2021 | Dec. 29, 2020 | Dec. 31, 2019
Deferred tax assets: |  |  |
Staff member benefits | $ 36,295 | $ 33,419 |
Insurance reserves | 12,897 | 11,460 |
Operating lease liability | 315,403 | 319,274 |
Deferred income | 33,075 | 31,119 |
Tax credit carryforwards | 34,871 | 37,107 |
Goodwill | 19,103 | 15,632 |
Stock-based compensation | 10,122 | 9,937 |
State and foreign net operating loss carryforwards | 3,005 | 3,536 |
Derivative asset |  | 1,409 |
Other | 1,063 | 1,466 |
Subtotal | 465,834 | 464,359 |
Less: Valuation allowance | (1,036) | (1,041) |
Total | 464,798 | 463,318 |
Deferred tax liabilities: |  |  |
Property and equipment | (109,019) | (124,634) |
Prepaid expenses | (7,312) | (7,027) |
Inventory | (7,802) | (7,766) |
Accrued rent | (5,087) | (4,947) |
Operating lease assets | (277,220) | (280,845) |
Other | (724) | (214) |
Total | (407,164) | (425,433) |
Net deferred tax liability |  | 37,885 |
Net deferred tax asset/(liability) | 57,634 |  |
Reconciliation of beginning and ending amount of our uncertain tax positions |  |  |
Balance at beginning of year | 655 | 704 | $ 830
Additions related to prior year tax positions | 4,157 |  |
Additions related to current period tax positions | 13 | 49 | 13
Reductions related to settlements with taxing authorities and lapses of statutes of limitations |  |  | (139)
Balance at end of year | 4,799 | 655 | $ 704
Accrued interest and penalties related with uncertain tax positions | 3,600 | 300 |
Decrease in uncertain tax positions during the next twelve months based on the lapses of statutes of limitations for certain jurisdictions | 1,800 |  |
Tax credit carryforwards | 1,700 | 1,900 |
Tax credit carryforward valuation allowance | 1,000 |  |
State |  |  |
Reconciliation of beginning and ending amount of our uncertain tax positions |  |  |
Tax credit carryforwards | 64,600 | 79,500 |
Foreign |  |  |
Deferred tax assets: |  |  |
Tax credit carryforwards | 2,700 |  |
Federal |  |  |
Reconciliation of beginning and ending amount of our uncertain tax positions |  |  |
Tax credit carryforwards | $ 33,600 | $ 35,600 |

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