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Note 5 - Derivative Financial Instruments - Net Derivative Liabilities By Counterparty (Details) - Commodity Contract [Member] $ in Thousands | Sep. 30, 2022 USD ($)
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Net derivative liabilities | $ 6,190
Bank of America, National Association [Member] |
Net derivative liabilities | 10,835
Citizens Bank, National Association [Member] |
Commodity price derivatives | 5,767
Fifth Third Bank, National Association [Member] |
Net derivative liabilities | $ (10,412)

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