Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 38,407	$ 38,407
Gross Carrying Amount	78,223	78,223
Accumulated Amortization	22,751	20,742
Total	15,656	17,665
Total	55,472	57,481
Trade names
Indefinite-lived Intangible Assets [Line Items]
Nonamortized intangible assets	39,816	39,816
Engineering designs
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	982	982
Accumulated Amortization	280	141
Total	702	841
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	37,425	37,425
Accumulated Amortization	22,471	20,601
Total	$ 14,954	$ 16,824