Income Taxes - Schedule of Components of Net Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019
Deferred income tax assets:
Loss/credit carryforwards	$ 31,854	$ 28,391
Inventories	14,450	16,809
Accrued employee benefits	14,833	15,834
Accrued liabilities	7,015	0
Other	5,434	3,353
Total gross deferred income tax assets	73,586	64,387
Less valuation allowances	(34,948)	(29,170)
Deferred income tax assets	38,638	35,217
Deferred income tax liabilities:
Property, plant and equipment	14,282	15,621
Tax on unremitted earnings	5,339	5,192
Acceleration of revenue under Topic 606	4,028	6,055
Deferred income tax liabilities	23,649	26,868
Net deferred income tax assets/(liabilities)	$ 14,989	$ 8,349

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