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Product Warranties
 9 Months Ended
Jul. 01, 2017
Product Warranties Disclosures [Abstract]  
Product Warranties
Product Warranties
In the ordinary course of business, we warrant our products against defects in design, materials and workmanship typically over periods ranging from twelve to sixty months. We determine warranty reserves needed by product line based on historical experience and current facts and circumstances. Activity in the warranty accrual is summarized as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
July 1,
2017
 
July 2,
2016
 
July 1,
2017
 
July 2,
2016
Warranty accrual at beginning of period
 
$
23,272

 
$
20,398

 
$
21,363

 
$
18,660

Additions from acquisitions
 
433

 
—

 
433

 
—

Warranties issued during current year
 
4,030

 
2,609

 
12,185

 
7,952

Adjustments to pre-existing warranties
 
(124
)
 
(878
)
 
(495
)
 
(1,227
)
Reductions for settling warranties
 
(4,046
)
 
(1,898
)
 
(9,509
)
 
(4,946
)
Foreign currency translation
 
420

 
(351
)
 
8

 
(559
)
Warranty accrual at end of period
 
$
23,985

 
$
19,880

 
$
23,985

 
$
19,880