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Note H - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2018 | Apr. 30, 2017 | Apr. 30, 2016
Current | $ 8,757 | $ 11,399 | $ 7,800
Deferred | (6,360) | 638 | (898)
Total | $ 2,397 | $ 12,037 | $ 6,902

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