Note C - Finance Receivables, Net - Finance Receivable Summarized by Fiscal Year of Origination (Details) - USD ($) $ in Thousands	Oct. 31, 2022	Jul. 31, 2022	Apr. 30, 2022	Oct. 31, 2021	Jul. 31, 2021
2023, principal balance	$ 528,323			$ 437,918
2022, principal balance	548,904			417,803
2021, principal balance	164,885			100,990
2020, principal balance	16,840			9,046
2019, principal balance	674			594
Prior to 2019, principal balance	23			74
Principle Balance	$ 1,259,649	$ 1,259,649	$ 1,101,497	$ 966,425	$ 966,425
Principal balance, percentage	100.00%	100.00%	100.00%	100.00%	100.00%
2022, principal balance	$ 528,323			$ 437,918
2021, principal balance	548,904			417,803
2020, principal balance	164,885			100,990
2019, principal balance	16,840			9,046
2018, principal balance	674			594
Prior to 2018, principal balance	23			74
Customer Score 1-2 [Member]
2023, principal balance	23,888			24,599
2022, principal balance	22,264			21,147
2021, principal balance	5,838			6,009
2020, principal balance	741			342
2019, principal balance	12			17
Prior to 2019, principal balance	0			0
Principle Balance	$ 52,743			$ 52,114
Principal balance, percentage	4.20%			5.40%
2022, principal balance	$ 23,888			$ 24,599
2021, principal balance	22,264			21,147
2020, principal balance	5,838			6,009
2019, principal balance	741			342
2018, principal balance	12			17
Prior to 2018, principal balance	0			0
Customer Score 3-4 [Member]
2023, principal balance	174,553			150,049
2022, principal balance	167,298			141,371
2021, principal balance	48,272			34,291
2020, principal balance	4,422			2,361
2019, principal balance	157			100
Prior to 2019, principal balance	9			32
Principle Balance	$ 394,711			$ 328,204
Principal balance, percentage	31.30%			34.00%
2022, principal balance	$ 174,553			$ 150,049
2021, principal balance	167,298			141,371
2020, principal balance	48,272			34,291
2019, principal balance	4,422			2,361
2018, principal balance	157			100
Prior to 2018, principal balance	9			32
Customer Score 5-6 [Member]
2023, principal balance	329,882			263,270
2022, principal balance	359,342			255,285
2021, principal balance	110,775			60,690
2020, principal balance	11,677			6,343
2019, principal balance	505			477
Prior to 2019, principal balance	14			42
Principle Balance	$ 812,195			$ 586,107
Principal balance, percentage	64.50%			60.60%
2022, principal balance	$ 329,882			$ 263,270
2021, principal balance	359,342			255,285
2020, principal balance	110,775			60,690
2019, principal balance	11,677			6,343
2018, principal balance	505			477
Prior to 2018, principal balance	$ 14			$ 42