Note C - Finance Receivables, Net (Details Textual)	12 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Jan. 31, 2020	Jul. 31, 2019	May 01, 2019
Finance Receivables, Number of Loan Classes	1
Finance Receivables, Number of Risk Pools	1
Net Charge Offs as Percentage of Average Finance Receivables	23.10%	25.70%
Collections as Percentage of Average Financing Receivables	55.10%	55.30%
Delinquencies Greater Than 30 Days as Percentage of Average Financing Receivables	6.20%	2.90%
Finance Receivables, Allowance, Percent of Principle Balance			24.50%	24.50%	25.00%
COVID-19 Pandemic [Member]
Finance Receivables, Allowance, Percent of Principle Balance	26.50%
Minimum [Member]
Financing Receivable Interest Rate	15.00%
Financing Receivable Payment Period (Month)	1 year 180 days
Minimum [Member] | ILLINOIS
Financing Receivable Interest Rate	19.50%
Maximum [Member]
Financing Receivable Interest Rate	16.50%
Financing Receivable Payment Period (Month)	4 years
Maximum [Member] | ILLINOIS
Financing Receivable Interest Rate	21.50%