Note C - Finance Receivables (Detail)	6 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Finance Receivables Interest Rate Range Start	11.00%
Finance Receivable Interest Rate Range End	19.00%
Finance Receivables Payment Periods Start	18 months
Finance Receivables Payment Periods End	36 months
Finance Receivables, Number Of Loan Classes	1
Finance Receivables, Number Of Risk Pools	1
Net Increase In Net Charge Offs As Percentage Of Average Finance Receivables	0.40%
Net Charge Offs As Percentage of Average Finance Receivables	12.40%	12.00%
Allowance Percentage	21.50%	22.00%
Collections As Percentage of Average Finance Receivables	29.40%	31.60%
Dellinquecies Greater Than 30 Days As Percentage Of Average Finance Receivables	4.30%	3.90%