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Warranties (Activity for Estimated Warranty Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
Accrual for estimated warranties        
Balance at beginning of period $ 18,538 $ 17,760 $ 18,678 $ 17,069
Purchase accounting additions 0 1,192 0 1,192
Charged to costs and expenses 6,232 6,765 12,579 14,586
Payments and deductions (6,965) (7,154) (13,452) (14,284)
Balance at end of period $ 17,805 $ 18,563 $ 17,805 $ 18,563