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Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member] - TBK Bank [Member] $ in Millions | Jul. 17, 2025 USD ($)
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Proceeds From Reimbursement | $ 3.8
Indemnification Payments, Settlement | $ 37.3

X
- Definition The value of indemnification payments from a settlement. + References No definition available. + Details
Name: | cvti_IndemnificationPaymentsSettlement
Namespace Prefix: | cvti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cvti_ProceedsFromReimbursement
Namespace Prefix: | cvti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cvti_TBKBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |