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Note 3 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Aug. 18, 2023 | Apr. 26, 2023 | Feb. 09, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Payment for Contingent Consideration Liability, Financing Activities |  |  |  | $ 9,187 | $ (0) | $ (0)
AAT Carriers Inc [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  |  | $ 20,000 |  |  |
Business Combination, Contingent Consideration, Earnout Period (Year) |  |  | 2 years |  |  |
Business Combination, Contingent Consideration, Liability, Fair Value Disclosure |  |  |  | 21,800 | $ 17,000 |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  | 4,800 |  |
Payment for Contingent Consideration Liability |  |  |  | 10,000 |  |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  | 9,200 |  |
Payment for Contingent Consideration Liability, Operating Activities |  |  |  | 800 |  |
AAT Carriers Inc [Member] | Changes Measurement [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  | 3,000 |  |
AAT Carriers Inc [Member] | Stock Purchase Agreement, Earnout Component [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  |  | $ 20,000 |  |  |
Lew Thompson & Son Trucking, Inc. [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  | $ 30,000 |  |  |  |
Business Combination, Contingent Consideration, Earnout Period (Year) |  | 3 years |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  | 10,000 |  |
Lew Thompson & Son Trucking, Inc. [Member] | Stock Purchase Agreement, Earnout Component [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  | $ 129,900 |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High |  | $ 30,000 |  |  |  |
Sims Transport Services, LLC [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 12,000 |  |  |  |  |
Business Combination, Contingent Consideration, Earnout Period (Year) | 4 years |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Fair Value Disclosure |  |  |  | 1,800 |  |
Sims Transport Services, LLC [Member] | Stock Purchase Agreement, Earnout Component [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High | $ 12,000 |  |  |  |  |
LTST [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Fair Value Disclosure |  |  |  | $ 10,000 |  |

X
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- Definition Fair value portion of liability recognized arising from contingent consideration in a business combination. + References No definition available. + Details
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- Definition The amount of cash outflow for payment for contingent consideration liability. + References No definition available. + Details
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X
- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479581/805-30-50-4 + Details
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- Definition This element represents the amount of any change recognized during the period in the high-end of the estimated range of outcomes (undiscounted) of a liability assumed in a business combination arising from an item of contingent consideration. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479581/805-30-50-4 + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479581/805-30-50-1 + Details
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X
- Definition Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (f) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
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- Definition Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability exceeding amount recognized at acquisition date. Includes, but is not limited to, measurement period adjustment and less amount paid soon after acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (ee) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-17 + Details
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