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Item 5. Other Information (Details Textual) item in Thousands	6 Months Ended
	Oct. 31, 2023 item
Issuer Rule 10b5-1, Adopted or Terminated	0

X

- Definition

Number of directors that adopted or terminated Issuer Rule 10b5-1 plans.

+ References

No definition available.

+ Details

Name:	crmt_IssuerRule10b51AdoptedOrTerminated
Namespace Prefix:	crmt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration