Leases - Finance Lease Balance Sheet Locations (Details) - USD ($) $ in Thousands |
Sep. 25, 2021 |
Dec. 26, 2020 |
|---|---|---|
| Leases [Abstract] | ||
| Finance lease, right of use assets, location | Property and equipment, net of accumulated depreciation of $273,966 ($236,031 - 2020) | Property and equipment, net of accumulated depreciation of $273,966 ($236,031 - 2020) |
| Finance lease assets, net, included in property plant and equipment | $ 1,629 | $ 1,919 |
| Current portion of long-term debt | 791 | 872 |
| Long-term debt, less current portion | 924 | 1,172 |
| Total principal payable on finance leases | $ 1,715 | $ 2,044 |