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Note K - Supplemental Cash Flow Information (Tables)
3 Months Ended
Jul. 31, 2015
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
  Three Months Ended
July 31,
(in thousands)   2015   2014
Supplemental disclosures:                
Interest paid   $ 990     $ 681  
Income taxes (received) paid, net     86       (486 )
Non-cash transactions:                
Inventory acquired in repossession and payment protection plan claims     11,743       10,086