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Note 10 - Derivative Financial Instruments - Foreign Currency Exchange Contracts (Details) | Jun. 30, 2023 EUR (€) | Jun. 30, 2023 CAD ($) | Jun. 30, 2023 JPY (¥) | Jun. 30, 2022 EUR (€) | Jun. 30, 2022 CAD ($) | Jun. 30, 2022 JPY (¥)
--- | --- | --- | --- | --- | --- | ---
Foreign Exchange Contract [Member] |  |  |  |  |  |
Derivative, Notional Amount | € 0 | $ 16,600 | ¥ 2,100,000 | € 5,750 | $ 16,600 | ¥ 1,000,000

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