Note 7 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019
Gross	$ 13,780	$ 12,810
Accumulated Amortization	(5,213)	(4,200)
Net Book Value	$ 8,567	$ 8,610
Customer Relationships [Member]
Weighted-Average Useful Life (Year)	17 years 1 month 6 days	16 years 10 months 24 days
Gross	$ 9,870	$ 9,070
Accumulated Amortization	(2,837)	(2,207)
Net Book Value	$ 7,033	$ 6,863
Technology-Based Intangible Assets [Member]
Weighted-Average Useful Life (Year)	20 years	20 years
Gross	$ 1,800	$ 1,800
Accumulated Amortization	(551)	(461)
Net Book Value	$ 1,249	$ 1,339
Noncompete Agreements [Member]
Weighted-Average Useful Life (Year)	5 years	5 years
Gross	$ 1,860	$ 1,800
Accumulated Amortization	(1,663)	(1,466)
Net Book Value	$ 197	$ 334
Trade Names [Member]
Weighted-Average Useful Life (Year)	2 years 8 months 12 days	4 years
Gross	$ 250	$ 140
Accumulated Amortization	(162)	(66)
Net Book Value	$ 88	$ 74