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Note G - Fair Value Measurements (Tables)
12 Months Ended
Apr. 30, 2015
Fair Value Disclosures [Abstract]  
Fair Value, by Balance Sheet Grouping [Table Text Block]
   
April 30, 2015
   
April 30, 2014
 
(In thousands)
 
Carrying
Value
   
Fair
Value
   
Carrying
Value
   
Fair
Value
 
                         
Cash
  $ 790     $ 790     $ 289     $ 289  
Finance receivables, net
    324,144       256,681       293,299       233,289  
Accounts payable
    11,022       11,022       8,542       8,542  
Revolving credit facilities
    102,685       102,685       97,032       97,032