Note C - Financing Receivables Analysis (Details)	6 Months Ended
	Oct. 31, 2015	Oct. 31, 2014
Principal collected as a percent of average finance receivables	27.70%	28.20%
Average down-payment percentage	6.50%	6.80%
Average originating contract term (in months)	2 years 132 days	2 years 102 days