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Note 5 - Segment Information (Details Textual)	3 Months Ended
	Jun. 30, 2023
Number of Asset-based Operating Fleets Aggregated in a Segment	4

X

- Definition

The number of asset-based operating fleets that are aggregated in a segment because they have similar economic characteristics and meet the aggregation criteria.

+ References

No definition available.

+ Details

Name:	cvti_NumberOfAssetbasedOperatingFleetsAggregatedInASegment
Namespace Prefix:	cvti_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration