Note C - Finance Receivables, Net - Finance Receivable Summarized by Fiscal Year of Origination (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Apr. 30, 2021
2022, principal balance	$ 786,471	$ 591,346
2021, principal balance	268,454	187,067
2020, principal balance	43,951	28,534
2019, principal balance	2,467	2,422
2018, principal balance	129	155
Prior to 2018, principal balance	25	13
Principle Balance	$ 1,101,497	$ 809,537
Principal balance, percentage	100.00%	100.00%
2021, principal balance	$ 786,471	$ 591,346
2020, principal balance	268,454	187,067
2019, principal balance	43,951	28,534
2018, principal balance	2,467	2,422
2017, principal balance	129	155
Prior to 2017, principal balance	25	13
Customer Score 1-2 [Member]
2022, principal balance	37,916	32,946
2021, principal balance	11,493	11,967
2020, principal balance	2,221	1,229
2019, principal balance	77	63
2018, principal balance	0	8
Prior to 2018, principal balance	2	0
Principle Balance	$ 51,709	$ 46,213
Principal balance, percentage	4.70%	5.70%
2021, principal balance	$ 37,916	$ 32,946
2020, principal balance	11,493	11,967
2019, principal balance	2,221	1,229
2018, principal balance	77	63
2017, principal balance	0	8
Prior to 2017, principal balance	2	0
Customer Score 3-4 [Member]
2022, principal balance	260,298	211,939
2021, principal balance	84,118	66,524
2020, principal balance	13,537	8,299
2019, principal balance	587	491
2018, principal balance	14	26
Prior to 2018, principal balance	15	8
Principle Balance	$ 358,569	$ 287,287
Principal balance, percentage	32.50%	35.50%
2021, principal balance	$ 260,298	$ 211,939
2020, principal balance	84,118	66,524
2019, principal balance	13,537	8,299
2018, principal balance	587	491
2017, principal balance	14	26
Prior to 2017, principal balance	15	8
Customer Score 5-6 [Member]
2022, principal balance	488,257	346,461
2021, principal balance	172,843	108,576
2020, principal balance	28,193	19,006
2019, principal balance	1,803	1,868
2018, principal balance	115	121
Prior to 2018, principal balance	8	5
Principle Balance	$ 691,219	$ 476,037
Principal balance, percentage	62.80%	58.80%
2021, principal balance	$ 488,257	$ 346,461
2020, principal balance	172,843	108,576
2019, principal balance	28,193	19,006
2018, principal balance	1,803	1,868
2017, principal balance	115	121
Prior to 2017, principal balance	$ 8	$ 5