Note C - Finance Receivables, Net - Credit Quality Information for Finance Receivables (Details) - USD ($) $ in Thousands	Apr. 30, 2020	Apr. 30, 2019
Current, principal balance	$ 515,390	$ 435,603
Current, percent of portfolio	82.97%	80.17%
3 - 29 days past due, principal balance	$ 67,259	$ 91,747
3 - 29 days past due, percent of portfolio	10.83%	16.89%
30 - 60 days past due, principal balance	$ 25,311	$ 11,362
30 - 60 days past due, percent of portfolio	4.07%	2.09%
61 - 90 days past due, principal balance	$ 10,140	$ 3,429
61 - 90 days past due, percent of portfolio	1.63%	0.63%
> 90 days past due, principal balance	$ 3,082	$ 1,187
> 90 days past due, percent of portfolio	0.50%	0.22%
Total, principal balance	$ 621,182	$ 543,328
Total, percent of portfolio	100.00%	100.00%