Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2017
Net income	$ 47,625,000	$ 36,509,000	$ 20,205,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	146,363,000	149,059,000	149,097,000
Losses on claims for payment protection plan	17,020,000	16,748,000	15,627,000
Depreciation and amortization	3,969,000	4,250,000	4,272,000
Amortization of debt issuance costs	251,000	260,000	252,000
Loss (gain) on disposal of property and equipment	(91,000)	91,000	1,204,000
Stock-based compensation	3,703,000	1,603,000	1,293,000
Deferred income taxes	1,701,000	(6,360,000)	638,000
Excess tax benefit from stock based compensation			(1,183,000)
Change in operating assets and liabilities:
Finance receivable originations	(540,505,000)	(494,641,000)	(479,099,000)
Finance receivable collections	293,739,000	260,104,000	249,264,000
Accrued interest on finance receivables	(159,000)	(91,000)	(382,000)
Inventory	47,641,000	38,793,000	42,493,000
Prepaid expenses and other assets	113,000	(780,000)	(730,000)
Accounts payable and accrued liabilities	2,226,000	4,712,000	676,000
Income taxes, net	(497,000)	(2,335,000)	2,963,000
Net cash provided by operating activities	24,902,000	9,994,000	7,334,000
Investing Activities:
Purchases of property and equipment	(4,029,000)	(2,258,000)	(1,587,000)
Proceeds from sale of property and equipment	142,000	554,000	932,000
Net cash used in investing activities	(3,887,000)	(1,704,000)	(655,000)
Financing Activities:
Exercise of stock options	5,117,000	1,641,000	1,895,000
Excess tax benefits from stock based compensation			1,183,000
Issuance of common stock	147,000	115,000	142,000
Purchase of common stock	(26,577,000)	(42,301,000)	(20,486,000)
Dividend payments	(40,000)	(40,000)	(40,000)
Debt issuance costs	(371,000)	(103,000)	(449,000)
Change in cash overdrafts	768,000	(163,000)	669,000
Principal payments on notes payable	(389,000)	(107,000)	(104,000)
Proceeds from revolving credit facilities	450,554,000	433,818,000	387,050,000
Payments on revolving credit facilities	(449,494,000)	(400,562,000)	(376,707,000)
Net cash used in financing activities	(20,285,000)	(7,702,000)	(6,847,000)
Increase (decrease) in cash and cash equivalents	730,000	588,000	(168,000)
Cash and cash equivalents, beginning of period	1,022,000	434,000	602,000
Cash and cash equivalents, end of period	1,752,000	1,022,000	434,000
Payment Protection Plan [Member]
Change in operating assets and liabilities:
Increase (decrease) in deferred revenue	1,544,000	1,351,000	1,167,000
Service Contract [Member]
Change in operating assets and liabilities:
Increase (decrease) in deferred revenue	$ 259,000	$ 721,000	$ (423,000)