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Note G - Fair Value Measurements (Tables)
3 Months Ended
Jul. 31, 2017
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
    July 31, 2017   April 30, 2017
(In thousands)   Carrying
Value
  Fair
Value
  Carrying
Value
  Fair
Value
                 
Cash   $
501
    $
501
    $
434
    $
434
 
Finance receivables, net    
369,986
     
297,487
     
357,161
     
287,115
 
Accounts payable    
13,223
     
13,223
     
11,224
     
11,224
 
Revolving credit facilities and notes payable    
117,646
     
117,646
     
117,944
     
117,944