Note 7 - Intangible Assets and Goodwill - Intangible Assets, Excluding Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Intangible assets, gross	$ 965	$ 965
Intangible assets, accumulated amortization	585	438
Intangible assets, net	$ 380	527
Customer Relationships [Member]
Intangible assets, useful life (Year)	15 years
Intangible assets, gross	$ 930	930
Intangible assets, accumulated amortization	564	423
Intangible assets, net	$ 366	507
Trademarks [Member]
Intangible assets, useful life (Year)	10 years
Intangible assets, gross	$ 13	13
Intangible assets, accumulated amortization	5	3
Intangible assets, net	$ 8	10
Noncompete Agreements [Member]
Intangible assets, useful life (Year)	5 years
Intangible assets, gross	$ 22	22
Intangible assets, accumulated amortization	16	12
Intangible assets, net	$ 6	$ 10