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Transactions With Related Parties (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Mar. 05, 2020 | Dec. 27, 2019 | Dec. 28, 2018 | Dec. 29, 2017
Related Party Transaction [Line Items] |  |  |  |
Total cost |  | $ 5,283 | $ 1,204 | $ 11,298
Director [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Repurchase of common stock |  | 28 |  |
Total cost |  | $ 500 |  |
Purchase price per share |  | $ 16.25 |  |
Director [Member] | Subsequent Event [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Repurchase of common stock | 37 |  |  |
Total cost | $ 700 |  |  |
Purchase price per share | $ 17.43 |  |  |
Director and CFO [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Repurchase of common stock |  |  | 53 |
Total cost |  |  | $ 1,000 |
Purchase price per share |  |  | $ 18.33 |
Chief Executive Officer, Chief Operating Officer and Chief Financial Officer [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Purchase of shares to cover withholding taxes |  |  | 73 |
Value of purchased shares to cover withholding taxes |  |  | $ 1,300 |

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