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Guarantees - Schedule of Activity Related to Limited Warranty Liability (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Oct. 01, 2016
Movement in Standard Product Warranty Accrual [Roll Forward]      
Limited warranty liability, beginning balance $ 4,756 $ 6,109 $ 5,847
Accruals for warranties issued during the period 5,608 912 1,777
Settlements (in cash or in kind) during the period (3,718) (2,265) (1,515)
Limited warranty liability, ending balance $ 6,646 $ 4,756 $ 6,109