Note C - Finance Receivables, Net - Credit Quality Information for Finance Receivables (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Apr. 30, 2016	Jan. 31, 2016
Current, Principal Balance	$ 371,078	$ 378,631	$ 364,453
Current, Percent of Portfolio	78.06%	86.59%	82.22%
3 - 29 days past due, Principal Balance	$ 81,887	$ 45,631	$ 56,835
3 - 29 days past due, Percent of Portfolio	17.23%	10.43%	12.82%
30 - 60 days past due, Principal Balance	$ 15,957	$ 8,429	$ 15,087
30 - 60 days past due, Percent of Portfolio	3.36%	1.93%	3.40%
61 - 90 days past due, Principal Balance	$ 4,395	$ 3,498	$ 4,790
61 - 90 days past due, Percent of Portfolio	0.92%	0.80%	1.08%
Financing Receivable, Recorded Investment Greater Than 90 Days Past Due	$ 2,037	$ 1,089	$ 2,131
> 90 days past due	0.43%	0.25%	0.48%
Finance Receivable Principal Balance	$ 475,354	$ 437,278	$ 443,296
Total, Percent of Portfolio	100.00%	100.00%	100.00%