Note C - Finance Receivables, Net - Credit Quality Information for Finance Receivables (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Apr. 30, 2024	Oct. 31, 2023	Oct. 31, 2022
Principle Balance	$ 1,473,794	$ 1,435,388	$ 1,463,398
Percent of Portfolio	100.00%	100.00%	100.00%	100.00%
Financial Asset, Not Past Due [Member]
Principle Balance	$ 1,188,852	$ 1,125,945	$ 1,121,215
Percent of Portfolio		78.44%	76.62%
Financial Asset, Past Due [Member]
Percent of Portfolio	80.66%
Financial Asset, 3 to 29 Days Past Due [Member]
Principle Balance	$ 233,486	$ 264,491	$ 290,123
Percent of Portfolio	15.84%	18.43%	19.83%
Financial Asset, 30 to 59 Days Past Due [Member]
Principle Balance	$ 35,039	$ 34,042	$ 37,602
Percent of Portfolio	2.38%	2.37%	2.57%
Financial Asset, 60 to 89 Days Past Due [Member]
Principle Balance	$ 10,083	$ 6,438	$ 7,068
Percent of Portfolio	0.68%	0.45%	0.48%
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Principle Balance	$ 6,334	$ 4,472	$ 7,390
Percent of Portfolio	0.44%	0.31%	0.50%