Note 6 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 01, 2022	Oct. 02, 2021
Gross	$ 12,070	$ 12,320
Accumulated Amortization	(4,610)	(4,652)
Net Book Value	$ 7,460	$ 7,668
Customer Relationships [Member]
Weighted-Average Useful Life (Year)	17 years 1 month 6 days	17 years 1 month 6 days
Gross	$ 9,870	$ 9,870
Accumulated Amortization	(3,644)	(3,482)
Net Book Value	$ 6,226	$ 6,388
Technology-Based Intangible Assets [Member]
Weighted-Average Useful Life (Year)	20 years	20 years
Gross	$ 1,800	$ 1,800
Accumulated Amortization	(662)	(639)
Net Book Value	$ 1,138	$ 1,161
Noncompete Agreements [Member]
Weighted-Average Useful Life (Year)	5 years	5 years
Gross	$ 400	$ 400
Accumulated Amortization	(304)	(284)
Net Book Value	$ 96	$ 116
Trade Names [Member]
Weighted-Average Useful Life (Year)		2 years 8 months 12 days
Gross		$ 250
Accumulated Amortization		(247)
Net Book Value		$ 3