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Debt - Future Principle and Interest Payments (Details) - USD ($) $ in Thousands | Dec. 25, 2021 | Dec. 26, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
Principal, 2022 | $ 8,935 |
Principal, 2023 | 1,050 |
Principal, 2024 | 1,080 |
Principal, 2025 | 1,111 |
Principal, 2026 | 1,142 |
Principal, 2027 and thereafter | 11,117 |
Principal, total | 24,435 | $ 34,569
Interest, 2022 | 361 |
Interest, 2023 | 282 |
Interest, 2024 | 263 |
Interest, 2025 | 240 |
Interest, 2026 | 220 |
Interest, 2027 and thereafter | 930 |
Interest, total | 2,296 |
Total payments, 2022 | 9,296 |
Total payments, 2023 | 1,332 |
Total payments, 2024 | 1,343 |
Total payments, 2025 | 1,351 |
Total payments, 2026 | 1,362 |
Total payments, 2027 and thereafter | 12,047 |
Long-term debt, maturities, total payments due | 26,731 |
FRT Term Loan |  |
Debt Instrument [Line Items] |  |
Principal, total | $ 7,900 |
Interest rate at period end | 1.20% |
Building Term Loan |  |
Debt Instrument [Line Items] |  |
Principal, total | $ 16,500 |
Interest rate at period end | 1.85% |

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