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Recently Adopted Accounting Standards - Narrative (Details) - USD ($) $ in Thousands | Mar. 28, 2020 | Dec. 29, 2019 | Dec. 28, 2019
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Allowance for doubtful accounts | $ 5,170 |  | $ 3,559
Retained earnings | 491,429 |  | 529,723
Debt securities available-for-sale amortized cost | $ 13,000 |  | $ 12,500
Cumulative Effect, Period Of Adoption, Adjustment |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Allowance for doubtful accounts |  | $ 100 |
Retained earnings |  | $ (100) |

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