Note 4 - Fair Value Measurements - Assets and Liabilities Measured On Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Derivative assets, current	$ 31,480	$ 17
Derivative instruments	16,059	0
derivatives liability – current	13,054	16,702
Derivatives	65	691
Commodity Contract [Member]
Total liabilities derivatives	34,420
Commodity Contract [Member] | Fair Value, Recurring [Member]
Derivative assets, current	31,480	17
Derivative instruments	16,059
derivatives liability – current	13,054	16,702
Derivative assets	47,539
Derivatives	65	691
Total liabilities derivatives	13,119	17,393
Total recurring fair value measurements	34,420	(17,376)
Commodity Contract [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative assets, current	0	0
Derivative instruments	0
derivatives liability – current	0	0
Derivatives	0	0
Total liabilities derivatives	0	0
Total recurring fair value measurements	0	0
Commodity Contract [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative assets, current	31,480	17
Derivative instruments	16,059
derivatives liability – current	13,054	16,702
Derivative assets	47,539
Derivatives	65	691
Total liabilities derivatives	13,119	17,393
Total recurring fair value measurements	34,420	(17,376)
Commodity Contract [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative assets, current	0	0
Derivative instruments	0
derivatives liability – current	0	0
Derivatives	0	0
Total liabilities derivatives	0	0
Total recurring fair value measurements	$ 0	$ 0