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Note C - Finance Receivables, Net (Details Textual)
 12 Months Ended
May 31, 2016
May 30, 2016
Apr. 30, 2019
Apr. 30, 2018
Finance Receivables, Number of Loan Classes     1  
Finance Receivables, Number of Risk Pools     1  
Net Charge Offs as Percentage of Average Finance Receivables     25.70% 28.80%
Collections as Percentage of Average Financing Receivables     55.30% 53.10%
Delinquencies Greater Than 30 Days as Percentage of Average Financing Receivables     2.90% 3.50%
Minimum [Member]        
Financing Receivable Interest Rate     15.00%  
Financing Receivable Payment Period     1 year 180 days  
Maximum [Member]        
Financing Receivable Interest Rate 16.50% 15.00% 16.50%  
Financing Receivable Payment Period     4 years