XML 40 R30.htm IDEA: XBRL DOCUMENT v3.20.2

Note A - Organization and Business (Details Textual)	3 Months Ended
	Jul. 31, 2020
Number of Operating Subsidiaries	2
Number of Dealerships Operated	150

X

- Definition

Number of dealerships that the entity has.

+ References

No definition available.

+ Details

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

X

- Definition

Number of operating subsidiaries that the entity has.

+ References

No definition available.

+ Details

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