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Note I - Stock-based Compensation - Options Exercised (Details) - USD ($)
$ in Thousands
9 Months Ended
Jan. 31, 2022
Jan. 31, 2021
Options exercised (in shares) 57,000 107,000
Cash received from option exercises $ 274 $ 4,731
Intrinsic value of options exercised $ 4,924 $ 4,868