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Warranties (Activity for Estimated Warranty Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2018
Jul. 01, 2017
Product Warranties Disclosures [Abstract]    
Product Warranty Accrual, Additions from Business Acquisition $ 0 $ 838
Accrual for estimated warranties    
Balance at beginning of period 16,638 15,479
Charged to costs and expenses 6,229 5,223
Payments and deductions (6,197) (5,224)
Balance at end of period $ 16,670 $ 16,316