Note 16 - Merom Acquisition (Details Textual) - Merom Acquisition [Member] $ in Millions	Feb. 14, 2022 USD ($)
Capacity Payment Reductions	$ 15.0
Purchase Obligation, Total	7.2
Business Acquisition, Purchase of Coal Inventory	17.0
Business Acquisition, Purchase of Coal Inventory, Initial Payment	5.4
Business Acquisition, Transaction Costs	$ 2.9