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Note K - Supplemental Cash Flow Disclosures (Details) - USD ($)
$ in Thousands
 6 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Supplemental disclosures:    
Interest paid $ 1,782 $ 1,376
Income taxes paid, net 2,990 5,238
Non-cash transactions:    
Inventory acquired in repossession and payment protection plan claims $ 23,054 $ 21,272