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Note C - Finance Receivables, Net (Details Textual)
 1 Months Ended 9 Months Ended 12 Months Ended
May 30, 2016
Jan. 31, 2017
Jan. 31, 2016
Apr. 30, 2016
Apr. 30, 2015
Finance Receivables, Weighted Average Interest Rate   15.70%      
Finance Receivables, Number of Loan Classes   1      
Finance Receivables, Number of Risk Pools   1      
Net Charge Offs as Percentage of Average Finance Receivables   21.80% 22.20%    
Delinquencies Greater Than 30 Days as Percentage of Average Financing Receivables   4.70% 5.00% 3.00% 5.80%
Collections as Percentage of Average Financing Receivables   37.90% 40.60%    
Minimum [Member]          
Financing Receivable Interest Rate   15.00%      
Financing Receivable Payment Period   1 year 180 days      
Maximum [Member]          
Financing Receivable Interest Rate 16.50% 16.50%   15.70%  
Financing Receivable Payment Period   3 years 180 days