Note C - Finance Receivables, Net - Credit Quality Information for Finance Receivables (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Apr. 30, 2023
Principle Balance	$ 1,435,388	$ 1,373,372
Percent of Portfolio	100.00%	100.00%
Financial Asset, Not Past Due [Member]
Principle Balance	$ 1,125,945	$ 1,166,860
Percent of Portfolio		84.96%
Financial Asset, Past Due [Member]
Percent of Portfolio	78.44%
Financial Asset, 3 to 29 Days Past Due [Member]
Principle Balance	$ 264,491	$ 156,943
Percent of Portfolio	18.43%	11.43%
Financial Asset, 30 to 59 Days Past Due [Member]
Principle Balance	$ 34,042	$ 37,214
Percent of Portfolio	2.37%	2.71%
Financial Asset, 60 to 89 Days Past Due [Member]
Principle Balance	$ 6,438	$ 8,407
Percent of Portfolio	0.45%	0.61%
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Principle Balance	$ 4,472	$ 3,948
Percent of Portfolio	0.31%	0.29%