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Note I - Stock-based Compensation - Options Exercised (Details) - USD ($)
$ in Thousands
3 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Options exercised (in shares) 22,000 21,500
Cash received from option exercises $ 1,166 $ 80
Intrinsic value of options exercised $ 793 $ 1,284