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Warranties (Activity for Estimated Warranty Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Accrual for estimated warranties    
Balance at beginning of period $ 18,678 $ 17,069
Charged to costs and expenses 6,347 7,821
Payments and deductions (6,487) (7,130)
Balance at end of period $ 18,538 $ 17,760