Finance Receivables, Net - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2025 USD ($) class loanPool	Oct. 31, 2024 USD ($)	Oct. 31, 2025 USD ($) class loanPool	Oct. 31, 2024 USD ($)	Jul. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan classes | class	1		1
Number of loan pools | loanPool	2		2
Amounts recovered from previously written-off accounts			$ 2,100	$ 1,800
Financing receivable, allowance for credit loss to outstanding (in percent)	24.19%		24.19%		23.35%
Provision for credit losses resulting benefit from increase (decrease)	$ 12,700
Increase in total dollars collected per active customer (in percent)			3.70%
Collections of average financing receivables (percent)			0.20%
Contract modifications, principal amount	199,908	$ 200,722	$ 302,884	311,519
Contract modifications, charge off in period following modification	$ 6,300	$ 4,600	40,200	36,300
Average originating contract term (in months) (Month)	44 months 18 days	44 months 9 days
Portfolio weighted average contract term, including modifications (in months)	48 months 15 days	48 months 6 days
Term extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract modifications, principal amount	$ 196,358	$ 196,894	$ 296,522	$ 305,028
Weighted average term increase from modification	1 month 12 days	1 month 15 days	1 month 18 days	1 month 24 days
Combination
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract modifications, principal amount	$ 3,550	$ 3,828	$ 6,362	$ 6,491
Weighted average term increase from modification	7 months 9 days	8 months 9 days	8 months 3 days	8 months 21 days
Weighted average interest rate	8.74%	7.75%	8.56%	7.76%
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate (in percent)			12.99%
Payments over period (in months)			18 months
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate (in percent)			23.00%
Payments over period (in months)			79 months