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Fair Value Measurements Table (Details) - Recurring - USD ($) $ in Thousands | Dec. 27, 2020 | Dec. 29, 2019
--- | --- | ---
Assets: |  |
Investments in rabbi trust | $ 6,740 | $ 7,337
Total assets measured at fair value | 6,740 | 7,337
Level 1 |  |
Assets: |  |
Investments in rabbi trust | 6,740 | 7,337
Total assets measured at fair value | 6,740 | 7,337
Level 2 |  |
Assets: |  |
Investments in rabbi trust | 0 | 0
Total assets measured at fair value | 0 | 0
Level 3 |  |
Assets: |  |
Investments in rabbi trust | 0 | 0
Total assets measured at fair value | $ 0 | $ 0

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