Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2018
Net income	$ 51,343,000	$ 47,625,000	$ 36,509,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	162,246,000	146,363,000	149,059,000
Losses on claims for payment protection plan	17,966,000	17,020,000	16,748,000
Depreciation and amortization	3,839,000	3,969,000	4,250,000
Amortization of debt issuance costs	273,000	251,000	260,000
Loss (gain) on disposal of property and equipment	(114,000)	(91,000)	91,000
Stock-based compensation	4,732,000	3,703,000	1,603,000
Deferred income taxes	(1,280,000)	1,701,000	(6,360,000)
Change in operating assets and liabilities:
Finance receivable originations	(604,497,000)	(540,505,000)	(494,641,000)
Finance receivable collections	322,180,000	293,739,000	260,104,000
Accrued interest on finance receivables	(750,000)	(159,000)	(91,000)
Inventory	53,827,000	47,641,000	38,793,000
Prepaid expenses and other assets	193,000	113,000	(780,000)
Accounts payable and accrued liabilities	1,009,000	2,226,000	4,712,000
Income taxes, net	5,788,000	(497,000)	(2,335,000)
Net cash provided by operating activities	20,917,000	24,902,000	9,994,000
Investing Activities:
Purchase of investments	(4,648,000)
Purchases of property and equipment	(5,422,000)	(4,029,000)	(2,258,000)
Proceeds from sale of property and equipment	184,000	142,000	554,000
Net cash used in investing activities	(9,886,000)	(3,887,000)	(1,704,000)
Financing Activities:
Exercise of stock options	1,533,000	5,117,000	1,641,000
Issuance of common stock	190,000	147,000	115,000
Purchase of common stock	(16,009,000)	(26,577,000)	(42,301,000)
Dividend payments	(40,000)	(40,000)	(40,000)
Debt issuance costs	(505,000)	(371,000)	(103,000)
Change in cash overdrafts	(1,274,000)	768,000	(163,000)
Principal payments on notes payable	(509,000)	(389,000)	(107,000)
Proceeds from revolving credit facilities	442,490,000	450,554,000	433,818,000
Payments on revolving credit facilities	(379,099,000)	(449,494,000)	(400,562,000)
Net cash provided by (used in) financing activities	46,777,000	(20,285,000)	(7,702,000)
Increase in cash and cash equivalents	57,808,000	730,000	588,000
Cash and cash equivalents, beginning of period	1,752,000	1,022,000	434,000
Cash and cash equivalents, end of period	59,560,000	1,752,000	1,022,000
Payment Protection Plan [Member]
Change in operating assets and liabilities:
Increase (decrease) in deferred revenue	3,113,000	1,544,000	1,351,000
Service Contract [Member]
Change in operating assets and liabilities:
Increase (decrease) in deferred revenue	$ 1,049,000	$ 259,000	$ 721,000