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Product Warranty (Tables)
 3 Months Ended
Jun. 30, 2018
Product Warranties Disclosures [Abstract]  
Reconciliation of the Change in Aggregate Accrual for Product Warranty
The following is a reconciliation of the changes in the aggregate product warranty accrual:
 
Fiscal quarter ended
(In thousands)
Jun 30, 2018
 
Jul 1, 2017
Product warranty accrual, beginning
$
10,220

 
$
5,474

Warranty charges incurred, net
(3,601
)
 
(2,445
)
Provision for warranty charges
4,906

 
3,509

Product warranty accrual, ending
$
11,525

 
$
6,538