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Note C - Finance Receivables, Net (Details Textual)	3 Months Ended		6 Months Ended
	Oct. 31, 2024 USD ($)	Oct. 31, 2023	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Jul. 31, 2024
Financing Receivable Interest Rate	18.25%	18.00%
Finance Receivables, Number of Loan Classes	1		1
Finance Receivables, Number of Risk Pools	1		1
Financing Receivable, Allowance for Credit Loss, Recovery			$ 1,800,000	$ 1,400,000
Financing Receivable, Allowance for Credit Loss to Outstanding, Percent	24.72%		24.72%		25.00%
Provision for Credit Losses, Resulting Benefit from Increase (Decrease)	$ 3,800,000
Total Dollars Collected Per Active Customer, Percentage Change			5.00%
Collections as Percentage of Average Financing Receivables			0.20%
Increase (Decrease) in Average Selling Price			$ 736
Increase (Decrease) in Average Selling Price, Percentage			3.90%
ARKANSAS
Financing Receivable Interest Rate	16.75%
TENNESSEE
Financing Receivable Interest Rate	23.00%
Maximum [Member]
Financing Receivable Interest Rate	18.25%
Financing Receivable Payment Period	79 months
Maximum [Member] | ARKANSAS
Financing Receivable Interest Rate	16.75%
Maximum [Member] | ILLINOIS
Financing Receivable Interest Rate	21.50%
Minimum [Member]
Financing Receivable Payment Period	18 months
Minimum [Member] | ILLINOIS
Financing Receivable Interest Rate	19.50%

X

- Definition

Represents the percentage of average financing receivables collected during the reported period.

+ References

No definition available.

+ Details

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X

- Definition

Number of loan classes of finance receivables.

+ References

No definition available.

+ Details

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X

- Definition

Number of risk pools of finance receivables.

+ References

No definition available.

+ Details

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X

- Definition

Represents the interest rate on installment sale contracts.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Represents the payment period on installment sale contracts from the sale of used vehicles.

+ References

No definition available.

+ Details

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X

- Definition

The amount of increase (decrease) in average selling price during period.

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

The percentage of increase(decrease) in average selling price.

+ References

No definition available.

+ Details

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- Definition

The resulting benefit from increasing or decreasing the provision for credit losses.

+ References

No definition available.

+ Details

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X

- Definition

The percentage change in total dollars collected per active customer over a period.

+ References

No definition available.

+ Details

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X

- Definition

Percentage of allowance for credit loss to total financing receivable outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (1)
-Publisher SEC

+ Details

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X

- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (c)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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