Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, $ in Thousands		3 Months Ended				9 Months Ended
	Jul. 12, 2024 USD ($)	Jan. 31, 2025 USD ($) mi $ / shares	Oct. 31, 2024 USD ($)	Jul. 31, 2024 USD ($)	Jan. 31, 2024 USD ($) $ / shares	Jan. 31, 2025 USD ($) mi segment $ / shares shares	Jan. 31, 2024 USD ($) $ / shares	Sep. 16, 2024 USD ($)	Sep. 15, 2024 USD ($)	Jun. 03, 2024 USD ($)	Apr. 30, 2024 USD ($)	Jul. 31, 2023 USD ($)
Schedule of Capitalization [Line Items]
Revolving line of credit, net		$ 73,119				$ 73,119					$ 200,819
Number of Reportable Segments | segment						1
Sales		263,484			$ 240,401	$ 836,506	$ 854,170
Financing Receivables, Allowance for APP Claims		3,660				3,660					3,171
Financing Receivable, Insurance Receivables for APP Claims		$ 3,416				$ 3,416					3,026
Contract with Customer, Liability, Revenue Recognized							$ 29,700
Diluted (in dollars per share) | $ / shares		$ 0.37			$ (1.34)	$ 0.94	$ (4.99)
Basic (in dollars per share) | $ / shares		$ 0.38			$ (1.34)	$ 0.96	$ (4.99)
Issuances of notes payable						$ 649,889	$ 610,340
Average Finance Receivable Interest Rate						17.50%
Accrued interest on finance receivables		$ 7,056				$ 7,056					$ 6,907
Finance Receivables, Customer Payments Due Either Weekly or Bi-Weekly, Percentage		78.00%
Financing Receivable, Greater Than or Equal to 30 Days Past Due, Percent of Portfolio		3.70%				3.70%					3.10%
Allowance for Credit Losses, Primary Factor Units Repossessed or Charged Off Evaluation Period		73 days
Financing Receivable, Weighted Average Total Contract Term						48 months 9 days
Financing Receivable, Remaining Contract Term						35 months 21 days
Financing Receivables, Allowance for Credit Losses and Other Losses		$ 333,300
Financing Receivable, Allowance for Credit Loss to Outstanding, Percent		24.31%	24.72%			24.31%
Total		$ 1,485,981			$ 1,428,908	$ 1,485,981	1,428,908				$ 1,435,388
Impairment of goodwill						120	$ 212
Goodwill		$ 22,800				$ 22,800					14,400
Effective Income Tax Rate Reconciliation, Percent						29.30%	21.90%
Tax Adjustments, Settlements, and Unusual Provisions						$ 0	$ 213
Open Tax Year		2021
Income Tax Examination, Penalties and Interest Accrued		$ 0				0					0
Financing Receivable, Recorded Investment Greater Than 90 Days Past Due		7,000			6,100	7,000	6,100
Late Fee Income Generated by Servicing Financial Assets, Amount		1,400			1,200	$ 3,900	3,600
Treasury Stock Shares to Establish Reserve Account to Secure Service Contracts | shares						10,000
ACM Insurance Company
Schedule of Capitalization [Line Items]
Treasury Stock, Shares to Establish Reserve Account to Meet Regulatory Requirements for Insurance Company | shares						14,000
Capitalized Computing Implementation Service Contract
Schedule of Capitalization [Line Items]
Capitalized Contract Cost, Net		19,400				$ 19,400					16,700
Capitalized Contract Cost, Amortization		$ 1,100			$ 48
Texas Auto Center
Schedule of Capitalization [Line Items]
Goodwill, Acquired During Period				$ 8,500
Goodwill										$ 8,500
Minimum
Schedule of Capitalization [Line Items]
Financing Receivable Interest Rate		12.99%
Maximum
Schedule of Capitalization [Line Items]
Financing Receivable Interest Rate		23.00%
Revenue Benchmark | Customer Concentration Risk | ARKANSAS
Schedule of Capitalization [Line Items]
Concentration Risk, Percentage						28.00%
Service Contract
Schedule of Capitalization [Line Items]
Contract with Customer, Liability, Recognition Period (Month)		9 months				9 months
Contract with Customer, Liability, Revenue Recognition, Miles		12,000	12,000			12,000
Contract with Customer, Liability, Increase in Timing of Revenue Recognition, Percent			25.00%
Contract with Customer, Liability, Revenue Recognized			$ 13,200
Contract with Customer, Liability, Revenue Recognized, Net of Tax			$ 7,100
Diluted (in dollars per share) | $ / shares						$ 0.91
Basic (in dollars per share) | $ / shares						$ 0.93
Deferred accident protection plan and service contract revenue		$ 57,127				$ 57,127					68,945
Accident Protection Plan
Schedule of Capitalization [Line Items]
Deferred accident protection plan and service contract revenue		50,400				50,400
Accident Protection Plan Claims
Schedule of Capitalization [Line Items]
Contract with Customer, Refund Liability		7,300				7,300
Revision of Prior Period, Adjustment
Schedule of Capitalization [Line Items]
Accident Protection Plan Claims												$ 11,700
Financing Receivables, Allowance for APP Claims												5,800
Financing Receivable, Insurance Receivables for APP Claims												$ 5,900
Revision of Prior Period, Adjustment | Wholesales – third party
Schedule of Capitalization [Line Items]
Sales							$ 3,000
Revolving line of credit, net
Schedule of Capitalization [Line Items]
Revolving line of credit, net		73,119				73,119					$ 200,819
Revolving line of credit, net | BMO Harris Bank
Schedule of Capitalization [Line Items]
Revolving credit facility, maximum borrowing capacity		$ 320,000				$ 320,000		$ 320,000	$ 340,000
Warehouse Facility
Schedule of Capitalization [Line Items]
Issuances of notes payable	$ 150,000			$ 150,000
Notes Payable, Percentage of Note Classified as Non-Recourse						10.00%