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Note A - Organization and Business (Details)	12 Months Ended
	Apr. 30, 2013
Disclosure Text Block [Abstract]
Number of Operating Subsidiaries	2
Number of Stores	124

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- Definition

Number of Operating Subsidiaries

+ References

No definition available.

+ Details

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Namespace Prefix:	crmt_
Data Type:	xbrli:integerItemType
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- Details

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Namespace Prefix:	us-gaap_
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- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant