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Product Warranties (Tables)
 9 Months Ended
Jun. 29, 2019
Product Warranties Disclosures [Abstract]  
Summary of Activity in Warranty Accrual Activity in the warranty accrual is summarized as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
June 29,
2019
 
June 30,
2018
 
June 29,
2019
 
June 30,
2018
Warranty accrual at beginning of period
 
$
24,217

 
$
28,255

 
$
25,537

 
$
25,848

Warranties issued during current period
 
6,666

 
3,451

 
12,691

 
11,488

Adjustments to pre-existing warranties
 
(125
)
 
(80
)
 
(523
)
 
(325
)
Reductions for settling warranties
 
(5,275
)
 
(3,219
)
 
(12,144
)
 
(9,141
)
Foreign currency translation
 
(102
)
 
(701
)
 
(180
)
 
(164
)
Warranty accrual at end of period
 
$
25,381

 
$
27,706

 
$
25,381

 
$
27,706