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Warranties (Activity for Estimated Warranty Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
Accrual for estimated warranties        
Balance at beginning of period $ 17,760 $ 16,670 $ 17,069 $ 16,638
Purchase accounting additions 1,192 0 1,192 0
Charged to costs and expenses 6,765 6,713 14,586 12,942
Payments and deductions (7,154) (6,478) (14,284) (12,675)
Balance at end of period $ 18,563 $ 16,905 $ 18,563 $ 16,905