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Note M - Subsequent Events (Details Textual) - BMO Harris Bank [Member] - USD ($) $ in Millions | Feb. 28, 2024 | Jan. 31, 2024 | Sep. 29, 2019
--- | --- | --- | ---
Revolving Credit Facility [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 600
Line of Credit, Unused Line Fee, Percent |  | 0.375% |
Debt Instrument, Covenant, Permitted Acquisitions Annual Consideration Amount |  | $ 10 |
Revolving Credit Facility [Member] | Subsequent Event [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 340 |  |
Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature | $ 100 |  |
Line of Credit, Unused Line Fee, Percent | 0.50% |  |
Debt Instrument, Covenant, Permitted Acquisitions Annual Consideration Amount | $ 20 |  |
Revolving Credit Facility [Member] | Subsequent Event [Member] | Base Rate [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |
Revolving Credit Facility [Member] | Subsequent Event [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 3.50% |  |
Daily Revolving Line of Credit [Member] | Subsequent Event [Member] |  |  |
Line of Credit, Unused Line Fee, Percent | 0.25% |  |

X
- Definition Represents the maximum amount of consideration available for permitted acquisitions as part of a debt covenant. + References No definition available. + Details
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Namespace Prefix: | crmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility with an accordion feature. + References No definition available. + Details
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Namespace Prefix: | crmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percent applicable to unused line categorized as a fee. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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X
- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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Period Type: |