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Note 3 - Fair Value of Financial Instruments (Details Textual) - AAT Carriers Inc [Member] - USD ($) $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Feb. 09, 2022 | Dec. 31, 2021
Stock Purchase Agreement, Earnout Component |  |  |  | $ 20,000 |
Business Combination, Contingent Consideration, Liability, Fair Value Disclosure | $ 17,000 | $ 17,000 | $ 16,200 |  | $ 0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | $ 800 |  |  |  |

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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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Namespace Prefix: | cvlg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The earnout component of stock purchase agreement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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 -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e7008-128479 + Details
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- Details
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