Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Statement [Line Items]
Net income		$ 20,432	$ 95,014	$ 104,820
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	$ (14,200)	352,860	238,054	153,835
Losses on claims for accident protection plan		25,107	21,871	18,954
Depreciation and amortization		5,602	4,033	3,719
Amortization of debt issuance costs		5,461	775	391
Loss (gain) on disposal of property and equipment		361	149	(40)
Stock-based compensation		5,314	5,496	5,962
Deferred income taxes		8,866	8,750	7,239
Change in operating assets and liabilities:
Finance receivable originations		(1,161,132)	(1,009,858)	(762,717)
Finance receivable collections		434,458	417,796	370,254
Accrued interest on finance receivables		(1,188)	(1,559)	(269)
Inventory		133,047	51,057	5,019
Prepaid expenses and other assets		(6,245)	(7,994)	(1,679)
Accounts payable and accrued liabilities		8,621	5,167	14,766
Income taxes, net		(8,984)	(424)	(3,691)
Net cash used in operating activities		(135,728)	(119,178)	(53,812)
Investing Activities:
Purchase of investments		(5,549)	(1,574)	0
Purchases of property and equipment		(22,106)	(15,796)	(8,952)
Proceeds from sale of property and equipment		84	20	694
Net cash used in investing activities		(27,571)	(17,350)	(8,258)
Financing Activities:
Exercise of stock options		1,216	(1,488)	4,034
Issuance of common stock		286	293	258
Purchase of common stock		(5,196)	(34,698)	(10,616)
Dividend payments		(40)	(40)	(40)
Debt issuance costs		(2,263)	(6,108)	(282)
Change in cash overdrafts		0	(1,802)	1,802
Issuances of non-recourse notes payable		400,176	399,994	0
Principal payments on notes payable		(327,276)	0	(524)
Proceeds from revolving credit facilities		524,531	331,113	73,337
Payments on revolving credit facilities		(402,688)	(511,042)	(62,566)
Net cash provided by financing activities		188,746	176,222	5,403
Increase (decrease) in cash, cash equivalents, and restricted cash		25,447	39,694	(56,667)
Cash, cash equivalents, and restricted cash beginning of period		42,587	2,893	59,560
Cash, cash equivalents, and restricted cash end of period	$ 2,893	68,034	42,587	2,893
Accident Protection Plan [Member]
Change in operating assets and liabilities:
Increase (decrease) in deferred revenue		17,150	21,850	14,865
Service Contract [Member]
Change in operating assets and liabilities:
Increase (decrease) in deferred revenue		$ 24,542	$ 30,645	$ 14,760