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Note G - Fair Value Measurements (Tables)
3 Months Ended
Jul. 31, 2018
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
    July 31, 2018   April 30, 2018
(In thousands)   Carrying
Value
  Fair
Value
  Carrying
Value
  Fair
Value
                 
Cash   $
841
    $
841
    $
1,022
    $
1,022
 
Finance receivables, net    
398,373
     
320,304
     
383,617
     
308,384
 
Accounts payable    
14,398
     
14,398
     
13,609
     
13,609
 
Debt facilities    
155,135
     
155,135
     
152,367
     
152,367