Note C - Financing Receivables Analysis (Details)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Principal collected as a percent of average finance receivables	57.50%	58.70%
Average down-payment percentage	6.70%	6.90%
Average originating contract term (in months)	2 years 147 days	2 years 111 days
Portfolio weighted average contract term, including modifications (in months)	2 years 228 days	2 years 186 days