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Warranties (Tables)
 6 Months Ended
Sep. 30, 2017
Product Warranties Disclosures [Abstract]  
Activity in the liability for estimated warranties
Activity in the liability for estimated warranties was as follows (in thousands):
 
Three Months Ended
 
Six Months Ended
 
September 30,
2017
 
October 1,
2016
 
September 30,
2017
 
October 1,
2016
Balance at beginning of period
$
16,316

 
$
13,718

 
$
15,479

 
$
13,371

Purchase accounting additions
—

 
—

 
838

 
—

Charged to costs and expenses
7,399

 
6,144

 
12,622

 
12,280

Payments and deductions
(7,245
)
 
(5,816
)
 
(12,469
)
 
(11,605
)
Balance at end of period
$
16,470

 
$
14,046

 
$
16,470

 
$
14,046