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Benefit Plan (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Apr. 01, 2018 | Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
Compensation And Retirement Disclosure [Abstract] |  |  |  |
Percentage of pre-tax annual compensation contributed to the plan |  | 15.00% |  |
Percentage of matching contributions of employee | 40.00% |  | 25.00% | 25.00%
Percentage of matching contributions of employee's gross salary | 6.00% |  | 6.00% | 4.00%
Company's matching contributions |  | $ 1.1 | $ 0.5 | $ 0.6

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