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Warranty Obligations (Tables)
 3 Months Ended
Dec. 29, 2018
Product Warranties Disclosures [Abstract]  
Warranty Provisions and Claims
Changes to accrued warranty costs are as follows: 
 
 
Three Months Ended
 
 
December 29,
2018
 
December 30,
2017
Beginning accrued warranty costs
 
$
5,418

 
$
6,018

Warranty claims
 
(2,892
)
 
(1,175
)
Warranty provisions
 
2,707

 
985

Adjustments to preexisting warranties
 
—

 
—

Currency translation
 
(4
)
 
4

Ending accrued warranty costs
 
$
5,229

 
$
5,832