Note 5 - Derivative Financial Instruments - Net Derivative Liabilities By Counterparty (Details) - Commodity Contract [Member] $ in Thousands	Jun. 30, 2023 USD ($)
Deriviative liabilities	$ (11,359)
Bank of America, National Association [Member]
Deriviative liabilities	(7,994)
Citizens Bank, National Association [Member]
Deriviative liabilities	$ (3,365)

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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+ Details