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Note G - Fair Value Measurements (Tables)
9 Months Ended
Jan. 31, 2015
Fair Value Disclosures [Abstract]  
Fair Value, by Balance Sheet Grouping [Table Text Block]
    January 31, 2015   April 30, 2014
(In thousands)   Carrying
Value
  Fair
Value
  Carrying
Value
  Fair
Value
                 
Cash   $ 1,564     $ 1,564     $ 289     $ 289  
Finance receivables, net     329,803       261,422       293,299       233,289  
Accounts payable     13,179       13,179       8,542       8,542  
Revolving credit facilities     112,560       112,560       97,032       97,032