Note 8 - Long-lived Assets - Cost Basis, Accumulated Amortization and Net Book Value of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Intangible assets, cost basis	$ 25,248	$ 25,248
Intangible assets, accumulated amortization	(16,253)	(15,592)
Intangible assets, accumulated impairment charges	(7,592)	(7,592)
Intangible assets, net	$ 1,403	$ 2,064
Intangible assets, remaining weighted average amortization period (Year)	2 years 6 months	3 years 3 months 18 days
Noncompete Agreements [Member]
Intangible assets, cost basis	$ 170	$ 170
Intangible assets, accumulated amortization	(170)	(170)
Customer Relationships [Member]
Intangible assets, cost basis	15,979	15,979
Intangible assets, accumulated amortization	(8,103)	(7,842)
Intangible assets, accumulated impairment charges	(7,592)	(7,592)
Intangible assets, net	$ 284	$ 545
Intangible assets, remaining weighted average amortization period (Year)	1 year 1 month 6 days	2 years 1 month 6 days
Trade Names [Member]
Intangible assets, cost basis	$ 9,099	$ 9,099
Intangible assets, accumulated amortization	(7,980)	(7,580)
Intangible assets, net	$ 1,119	$ 1,519
Intangible assets, remaining weighted average amortization period (Year)	2 years 9 months 18 days	3 years 9 months 18 days