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Note 5 - Derivative Instruments (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net $ (14,068) $ 4,688 $ (1,373) $ (21,917)  
Derivative, Gain (Loss) on Derivative, Net (7,286) $ 4,023 2,150 $ (24,970)  
Restricted Cash and Cash Equivalents $ 5,079   $ 5,079   $ 2,088