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Note I - Stock-based Compensation - Options Exercised (Details) - USD ($)
$ in Thousands
9 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Options exercised (in shares) 107,000 112,250
Cash received from option exercises $ 4,731 $ 2,849
Intrinsic value of options exercised $ 4,868 $ 6,861