Note 5 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Sep. 30, 2023
Intangible assets, gross	$ 11,730	$ 12,070
Intangible assets, accumulated amortization	(6,014)	(5,980)
Net book value	$ 5,716	$ 6,090
Customer Relationships [Member]
Weighted average useful life (Year)	17 years 1 month 6 days	17 years 1 month 6 days
Intangible assets, gross	$ 9,870	$ 9,870
Intangible assets, accumulated amortization	(5,103)	(4,779)
Net book value	$ 4,767	$ 5,091
Technology-Based Intangible Assets [Member]
Weighted average useful life (Year)	20 years	20 years
Intangible assets, gross	$ 1,800	$ 1,800
Intangible assets, accumulated amortization	(863)	(818)
Net book value	$ 937	$ 982
Noncompete Agreements [Member]
Weighted average useful life (Year)	5 years	5 years
Intangible assets, gross	$ 60	$ 400
Intangible assets, accumulated amortization	(48)	(383)
Net book value	$ 12	$ 17