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Note G - Fair Value Measurements (Tables)
6 Months Ended
Oct. 31, 2017
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
    October 31, 2017   April 30, 2017
(In thousands)
  Carrying
Value
  Fair
Value
  Carrying
Value
  Fair
Value
Cash   $
358
    $
358
    $
434
    $
434
 
Finance receivables, net    
376,577
     
302,884
     
357,161
     
287,115
 
Accounts payable    
12,637
     
12,637
     
11,224
     
11,224
 
Revolving credit facilities and notes payable    
137,950
     
137,950
     
117,944
     
117,944