Note C - Finance Receivables, Net - Finance Receivable Summarized by Fiscal Year of Origination (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Apr. 30, 2021	Jan. 31, 2021
2022, principal balance	$ 611,296
2021, principal balance	342,579
2020, principal balance	70,149
2019, principal balance	4,873
2018, principal balance	269
Prior to 2018, principal balance	37
Principle Balance	$ 1,029,203	$ 809,537	$ 744,521
Principal balance, percentage	100.00%	100.00%	100.00%
Customer Score 1-2 [Member]
2022, principal balance	$ 31,704
2021, principal balance	16,129
2020, principal balance	3,921
2019, principal balance	170
2018, principal balance	3
Prior to 2018, principal balance	0
Principle Balance	$ 51,927
Principal balance, percentage	5.00%
Customer Score 3-4 [Member]
2022, principal balance	$ 207,084
2021, principal balance	112,330
2020, principal balance	23,042
2019, principal balance	1,205
2018, principal balance	36
Prior to 2018, principal balance	17
Principle Balance	$ 343,714
Principal balance, percentage	33.40%
Customer Score 5-6 [Member]
2022, principal balance	$ 372,508
2021, principal balance	214,120
2020, principal balance	43,186
2019, principal balance	3,498
2018, principal balance	230
Prior to 2018, principal balance	20
Principle Balance	$ 633,562
Principal balance, percentage	61.60%