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Commitments and Contingencies - Schedule of Changes in Warranty Reserves (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 26, 2020
Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]    
Balance, beginning of the period $ 6,348 $ 2,441
Accruals 7,707 4,265
Warranty liability assumed in Merger   4,227
Usage (7,570) (4,585)
Balance, end of the period $ 6,485 $ 6,348