Note C - Finance Receivables, Net - Credit Quality Information for Finance Receivables (Details) - USD ($) $ in Thousands	Oct. 31, 2017	Apr. 30, 2017	Oct. 31, 2016
Current, Principal Balance	$ 381,557	$ 397,341	$ 386,962
Current, Percent of Portfolio	77.48%	85.12%	81.58%
3 - 29 days past due, Principal Balance	$ 90,776	$ 52,869	$ 64,749
3 - 29 days past due, Percent of Portfolio	18.43%	11.32%	13.65%
30 - 60 days past due, Principal Balance	$ 14,485	$ 11,658	$ 16,581
30 - 60 days past due, Percent of Portfolio	2.94%	2.50%	3.50%
61 - 90 days past due, Principal Balance	$ 3,832	$ 3,516	$ 4,161
61 - 90 days past due, Percent of Portfolio	0.78%	0.75%	0.88%
> 90 days past due	$ 1,845	$ 1,470	$ 1,842
> 90 days past due	0.37%	0.31%	0.39%
Total	$ 492,495	$ 466,854	$ 474,295
Total	100.00%	100.00%	100.00%