Goodwill and Intangible Assets- Schedule of components of amortizable intangible assets (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 64,225	$ 73,235
Accumulated Amortization	(49,485)	(51,470)
Net	14,740	21,765
Existing technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	39,524	46,547
Accumulated Amortization	(35,522)	(37,630)
Net	4,002	8,917
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,101	24,388
Accumulated Amortization	(12,586)	(12,923)
Net	9,515	11,465
Production know-how
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,300	2,300
Accumulated Amortization	(1,377)	(917)
Net	923	1,383
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	300	0
Accumulated Amortization	0	0
Net	$ 300	$ 0