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Note G - Fair Value Measurements (Tables)
12 Months Ended
Apr. 30, 2019
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
    April 30, 2019   April 30, 2018
(In thousands)   Carrying
Value
  Fair
Value
  Carrying
Value
  Fair
Value
                 
Cash   $
1,752
    $
1,752
    $
1,022
    $
1,022
 
Finance receivables, net    
415,486
     
334,147
     
383,617
     
308,384
 
Accounts payable    
13,659
     
13,659
     
13,609
     
13,609
 
Debt facilities    
152,918
     
152,918
     
152,367
     
152,367