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Other Current Liabilities - Accrued Warranty Activity (Details)
$ in Thousands
3 Months Ended
Mar. 26, 2021
USD ($)
Activity In Accrued Warranty And Service Liabilities Abstract  
Balance, beginning of year $ 13,082
Charged to expense 2,701
Margin on parts sales reversed 835
Reductions for claims settled (3,192)
Balance, end of period $ 13,426