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Note 8 - Long-lived Assets - Cost Basis, Accumulated Amortization and Net Book Value of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Intangible assets, cost basis | $ 25,248 | $ 25,248
Intangible assets, accumulated amortization | (15,592) | (14,928)
Intangible assets, net | $ 2,064 | $ 2,728
Intangible assets, remaining weighted average amortization period (Year) | 3 years 3 months 18 days | 4 years 3 months 18 days
Intangible assets, accumulated impairment charges | $ (7,592) | $ (7,592)
Noncompete Agreements [Member] |  |
Intangible assets, cost basis | 170 | 170
Intangible assets, accumulated amortization | (170) | (167)
Intangible assets, net |  | $ 3
Intangible assets, remaining weighted average amortization period (Year) |  | 1 month 6 days
Customer Relationships [Member] |  |
Intangible assets, cost basis | 15,979 | $ 15,979
Intangible assets, accumulated amortization | (7,842) | (7,581)
Intangible assets, net | $ 545 | $ 806
Intangible assets, remaining weighted average amortization period (Year) | 2 years 1 month 6 days | 3 years 1 month 6 days
Intangible assets, accumulated impairment charges | $ (7,592) | $ (7,592)
Trade Names [Member] |  |
Intangible assets, cost basis | 9,099 | 9,099
Intangible assets, accumulated amortization | (7,580) | (7,180)
Intangible assets, net | $ 1,519 | $ 1,919
Intangible assets, remaining weighted average amortization period (Year) | 3 years 9 months 18 days | 4 years 9 months 18 days

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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