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Note M - Supplemental Cash Flow Information - Supplemental Cash Flow Disclosures (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Apr. 30, 2016
Supplemental disclosures:      
Interest paid $ 5,599 $ 4,069 $ 3,536
Income taxes paid, net 11,092 8,435 7,811
Non-cash transactions:      
Inventory acquired in repossession and payment protection plan claims 42,274 42,743 43,766
Purchase of property and equipment using the issuance of debt 1,151 550
Loss accrued on disposal of property and equipment 797 300
Net settlement option exercises $ 3,859 $ 2,130