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Stock Plans (Detail Textuals) - USD ($) $ in Millions | Aug. 31, 2019 | May 31, 2019
--- | --- | ---
Common Stock | New Stock Repurchase Program |  |
Equity Class Of Treasury Stock [Line Items] |  |
Stock repurchase program, authorized amount | $ 1.0 | $ 8.0

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Details
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