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Product Warranties (Tables)
 6 Months Ended
Mar. 30, 2019
Product Warranties Disclosures [Abstract]  
Summary of Activity in Warranty Accrual Activity in the warranty accrual is summarized as follows:
 
 
Three Months Ended
 
Six Months Ended
 
 
March 30,
2019
 
March 31,
2018
 
March 30,
2019
 
March 31,
2018
Warranty accrual at beginning of period
 
$
24,256

 
$
27,748

 
$
25,537

 
$
25,848

Warranties issued during current period
 
4,055

 
3,280

 
6,025

 
8,037

Adjustments to pre-existing warranties
 
(307
)
 
(175
)
 
(398
)
 
(245
)
Reductions for settling warranties
 
(3,892
)
 
(3,007
)
 
(6,869
)
 
(5,922
)
Foreign currency translation
 
105

 
409

 
(78
)
 
537

Warranty accrual at end of period
 
$
24,217

 
$
28,255

 
$
24,217

 
$
28,255