Note C - Finance Receivables, Net - Credit Quality Information for Finance Receivables (Details) - USD ($) $ in Thousands	Jul. 31, 2017	Apr. 30, 2017	Jul. 31, 2016
Current, Principal Balance	$ 390,879	$ 397,341	$ 381,685
Current, Percent of Portfolio	80.81%	85.12%	82.88%
3 - 29 days past due, Principal Balance	$ 70,406	$ 52,869	$ 58,740
3 - 29 days past due, Percent of Portfolio	14.55%	11.32%	12.75%
30 - 60 days past due, Principal Balance	$ 17,328	$ 11,658	$ 14,749
30 - 60 days past due, Percent of Portfolio	3.58%	2.50%	3.20%
61 - 90 days past due, Principal Balance	$ 3,078	$ 3,516	$ 3,728
61 - 90 days past due, Percent of Portfolio	0.64%	0.75%	0.81%
> 90 days past due	$ 2,028	$ 1,470	$ 1,668
> 90 days past due	0.42%	0.31%	0.36%
Total	100.00%	100.00%	100.00%
Total	$ 483,719	$ 466,854	$ 460,570