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Note K - Supplemental Cash Flow Information (Tables)
6 Months Ended
Oct. 31, 2018
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
  Six Months Ended
October 31,
(in thousands)   2018   2017
Supplemental disclosures:                
Interest paid   $
3,122
    $
2,496
 
Income taxes paid , net    
4,109
     
6,080
 
Non-cash transactions:                
Inventory acquired in repossession and payment protection plan claims    
24,348
     
20,096
 
Net settlement option exercises    
2,359
     
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