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Warranty (Tables)
6 Months Ended
Sep. 30, 2018
Product Warranties Disclosures [Abstract]  
Analysis Of Changes In Liability For Product Warranties An analysis of changes in the liability for product warranties is as follows:

 
 
Quarter ended
 
Six months ended
 
 
September 30, 2018
 
October 1, 2017
 
September 30, 2018
 
October 1, 2017
Balance at beginning of period
 
$
49,689

 
$
46,677

 
$
50,602

 
$
46,116

Current period provisions
 
6,181

 
3,717

 
11,017

 
6,808

Costs incurred
 
(7,920
)
 
(3,841
)
 
(12,301
)
 
(7,037
)
Foreign currency translation adjustment
 
(217
)
 
560

 
(1,585
)
 
1,226

Balance at end of period
 
$
47,733

 
$
47,113

 
$
47,733

 
$
47,113