Note 6 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Apr. 02, 2022	Oct. 02, 2021
Gross	$ 12,070	$ 12,320
Accumulated Amortization	(4,814)	(4,652)
Net Book Value	$ 7,256	$ 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	(3,806)	(3,482)
Net Book Value	$ 6,064	$ 6,388
Technology-Based Intangible Assets [Member]
Weighted-Average Useful Life (Year)	20 years	20 years
Gross	$ 1,800	$ 1,800
Accumulated Amortization	(684)	(639)
Net Book Value	$ 1,116	$ 1,161
Noncompete Agreements [Member]
Weighted-Average Useful Life (Year)	5 years	5 years
Gross	$ 400	$ 400
Accumulated Amortization	(324)	(284)
Net Book Value	$ 76	$ 116
Trade Names [Member]
Weighted-Average Useful Life (Year)		2 years 8 months 12 days
Gross		$ 250
Accumulated Amortization		(247)
Net Book Value		$ 3