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Note B - Summary of Significant Accounting Policies (Details Textual) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Apr. 30, 2024 USD ($) shares | Jan. 31, 2024 USD ($) | Oct. 31, 2023 | Apr. 30, 2024 USD ($) $ / shares shares | Apr. 30, 2023 USD ($) $ / shares shares | Apr. 30, 2022 USD ($) $ / shares shares | Sep. 30, 2023 | May 01, 2023 USD ($) | Apr. 30, 2021 USD ($)
Number of Reportable Segments |  |  |  |  | 1 |  |  |  |  |
Average Finance Receivable Interest Rate |  |  |  |  | 16.90% |  |  |  |  |
Financing Receivable Interest Rate | 18.00% |  |  |  | 18.25% |  |  |  |  |
Finance Receivables, Customer Payments Due Either Weekly or Bi-Weekly, Percentage |  |  |  |  | 78.30% |  |  |  |  |
Financing Receivable, Greater Than or Equal to 30 Days Past Due, Percent of Portfolio |  | 3.10% |  |  | 3.10% | 3.60% |  |  |  |
Financing Receivable, Allowance for Credit Loss |  | $ 331,260,000 |  |  | $ 331,260,000 | $ 299,608,000 | $ 237,823,000 |  |  | $ 177,267,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest |  |  |  |  | $ (31,393,000) | $ 20,432,000 | $ 95,014,000 |  |  |
Earnings Per Share, Basic | $ / shares |  |  |  |  | $ (4.92) | $ 3.2 | $ 14.59 |  |  |
Allowance for Credit Loss, Percentage |  | 25.32% | 25.74% | 26.04% |  |  |  |  |  |
Financing Receivable, Weighted Average Total Contract Term |  |  |  |  | 47 months 27 days |  |  |  |  |
Financing Receivable, Remaining Contract Term |  |  |  |  | 36 months 3 days |  |  |  |  |
Financing Receivables, Allowance for Credit Losses and Other Losses |  |  |  |  | $ 331,300,000 |  |  |  |  |
Finance Receivables, Allowance, Percent of Principle Balance |  | 25.32% | 25.74% |  | 25.32% | 23.91% | 23.57% | 26.04% |  | 23.55%
Finance Receivable, Principal Balance |  | $ 1,435,388,000 |  |  | $ 1,435,388,000 | $ 1,373,372,000 |  |  |  |
Goodwill, Impairment Loss |  |  |  |  |  | 267,000 |  |  |  |
Goodwill |  | 14,400,000 |  |  | 14,400,000 | 11,700,000 |  |  |  |
Goodwill, Period Increase (Decrease) |  |  |  |  |  | 2,700,000 |  |  |  |
Financing Receivable, Recorded Investment Greater Than 90 Days Past Due |  | $ 4,500,000 |  |  | 4,500,000 | 3,900,000 |  |  |  |
Late Fee Income Generated by Servicing Financial Assets, Amount |  |  |  |  | $ 4,900,000 | $ 4,400,000 | $ 3,100,000 |  |  |
Late Fee Income, Servicing Financial Asset, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Interest and other income | Interest and other income | Interest and other income |  |  |
Contract with Customer, Liability, Revenue Recognized |  |  |  |  | $ 34,800,000 | $ 26,800,000 |  |  |  |
Advertising Expense |  |  |  |  | $ 4,300,000 | 5,800,000 | $ 5,000,000 |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match |  |  |  |  | 50.00% |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |  |  |  |  | 6.00% |  |  |  |  |
Defined Contribution Plan, Employer Contribution Amount |  |  |  |  | $ 1,100,000 | 1,200,000 | $ 1,200,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant | shares |  | 102,514 |  |  | 102,514 |  |  |  |  |
Tax Adjustments, Settlements, and Unusual Provisions |  |  |  |  | $ 227,000 | $ 558,000 |  |  |  |
Stock Repurchased During Period, Shares | shares |  |  |  |  | 4,274 | 57,856 | 304,204 |  |  |
Stock Repurchased During Period, Value |  |  |  |  | $ 365,000 | $ 5,200,000 | $ 34,700,000 |  |  |
Treasury Stock Shares to Establish Reserve Account to Secure Service Contracts | shares |  |  |  |  | 10,000 |  |  |  |  |
Operating Lease, Weighted Average Remaining Lease Term |  | 11 years 4 months 24 days |  |  | 11 years 4 months 24 days |  |  |  |  |
Operating Lease, Weighted Average Discount Rate, Percent |  | 4.60% |  |  | 4.60% |  |  |  |  |
ACM Insurance Company [Member] |  |  |  |  |  |  |  |  |  |
Treasury Stock, Shares to Establish Reserve Account to Meet Regulatory Requirements for Insurance Company | shares |  |  |  |  | 14,000 |  |  |  |  |
2006 Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |  |  |  |
Common Stock Discount on Shares Percentage |  | 15.00% |  |  | 15.00% |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized | shares |  | 200,000 |  |  | 200,000 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant | shares |  | 125,149 |  |  | 125,149 |  |  |  |  |
Capitalized Computing Implementation Service Contract [Member] |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Net |  | $ 16,700,000,000 |  |  | $ 16,700,000,000 | 10,800,000,000 |  |  |  |
Capitalized Contract Cost, Amortization |  |  |  |  | 339,500 | 136,709 |  |  |  |
Accident Protection Plan [Member] |  |  |  |  |  |  |  |  |  |
Contract with Customer, Liability |  | 51,800,000 |  |  | 51,800,000 |  |  |  |  |
Service Contract [Member] |  |  |  |  |  |  |  |  |  |
Contract with Customer, Liability |  | 68,945,000 |  |  | 68,945,000 | $ 67,404,000 |  |  |  |
Accident Protection Plan Claims [Member] |  |  |  |  |  |  |  |  |  |
Contract with Customer, Refund Liability |  | 6,400,000 |  |  | 6,400,000 |  |  |  |  |
Change in Accounting Method Accounted for as Change in Estimate [Member] |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  | $ 5,400,000 | $ 3,900,000 |  | 5,400,000 |  |  |  | $ 28,000,000 |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest |  |  |  |  | $ 21,800,000 |  |  |  |  |
Earnings Per Share, Basic | $ / shares |  |  |  |  | $ 3.4 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Term of Contract |  | 3 years |  |  | 3 years |  |  |  |  |
Lessee, Operating Lease, Renewal Term |  | 3 years |  |  | 3 years |  |  |  |  |
Minimum [Member] | Furniture, Fixtures and Equipment [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 3 years |  |  | 3 years |  |  |  |  |
Minimum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 5 years |  |  | 5 years |  |  |  |  |
Minimum [Member] | Building and Building Improvements [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 18 years |  |  | 18 years |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |
Financing Receivable Interest Rate |  |  |  |  | 18.25% |  |  |  |  |
Lessee, Operating Lease, Term of Contract |  | 10 years |  |  | 10 years |  |  |  |  |
Lessee, Operating Lease, Renewal Term |  | 10 years |  |  | 10 years |  |  |  |  |
Maximum [Member] | Furniture, Fixtures and Equipment [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 7 years |  |  | 7 years |  |  |  |  |
Maximum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 15 years |  |  | 15 years |  |  |  |  |
Maximum [Member] | Building and Building Improvements [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 39 years |  |  | 39 years |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Distribution Limitations, Maximum Aggregate Amount of Stock Repurchases |  |  |  |  | $ 50,000,000 |  |  |  |  |
Line of Credit Facility, Distribution Limitations Percentage of Sum of Borrowing Bases |  |  |  |  | 20.00% |  |  |  |  |
Line of Credit Facility, Distribution Limitations Percentage of Consolidated Net Income |  |  |  |  | 75.00% |  |  |  |  |
Line of Credit Facility Distribution Limitations Minimum Percentage of Aggregate Funds Available |  |  |  |  | 12.50% |  |  |  |  |
ARKANSAS |  |  |  |  |  |  |  |  |  |
Financing Receivable Interest Rate | 16.75% |  |  |  |  |  |  |  |  |
ARKANSAS | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Financing Receivable Interest Rate |  |  |  |  | 16.75% |  |  |  |  |
ILLINOIS | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Financing Receivable Interest Rate |  |  |  |  | 19.50% |  |  |  |  |
ILLINOIS | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Financing Receivable Interest Rate |  |  |  |  | 21.50% |  |  |  |  |
TENNESSEE |  |  |  |  |  |  |  |  |  |
Financing Receivable Interest Rate |  |  |  |  | 23.00% |  |  |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Arkansas, USA [Member] |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  | 27.00% |  |  |  |  |

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