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Product Warranties (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Product Warranty Accrual [Roll Forward]    
Balance at beginning of period $ 15,865 $ 15,450
Accruals for warranties issued during period 4,626 6,372
Adjustments related to pre-existing warranties (272) 144
Settlements made during the period (5,076) (6,398)
Balance at end of period $ 15,143 $ 15,568