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Note 7 - 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, 2022 | Dec. 31, 2021
Intangible assets, cost basis | $ 25,248 | $ 25,248
Intangible assets, accumulated amortization | (14,928) | (14,203)
Intangible assets, net | $ 2,728 | $ 3,453
Intangible assets, remaining weighted average amortization period (Year) | 4 years 3 months 18 days | 5 years 2 months 12 days
Intangible assets, accumulated impairment charges | $ (7,592) | $ (7,592)
Noncompete Agreements [Member] |  |
Intangible assets, cost basis | 170 | 170
Intangible assets, accumulated amortization | (167) | (139)
Intangible assets, net | $ 3 | $ 31
Intangible assets, remaining weighted average amortization period (Year) | 1 month 6 days | 1 year 1 month 6 days
Customer Relationships [Member] |  |
Intangible assets, cost basis | $ 15,979 | $ 15,979
Intangible assets, accumulated amortization | (7,581) | (7,284)
Intangible assets, net | $ 806 | $ 1,103
Intangible assets, remaining weighted average amortization period (Year) | 3 years 1 month 6 days | 4 years
Intangible assets, accumulated impairment charges | $ (7,592) | $ (7,592)
Trade Names [Member] |  |
Intangible assets, cost basis | 9,099 | 9,099
Intangible assets, accumulated amortization | (7,180) | (6,780)
Intangible assets, net | $ 1,919 | $ 2,319
Intangible assets, remaining weighted average amortization period (Year) | 4 years 9 months 18 days | 5 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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