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Note F - Debt Facilities (Details Textual) | Oct. 31, 2023
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Notes Payable [Member] |
Minimum Percent of Pool Balance | 2.00%

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- Definition Minimum percent of pool balance. + References No definition available. + Details
Name: | crmt_MinimumPercentOfPoolBalance
Namespace Prefix: | crmt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=crmt_NotesPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |