Note 3 - Acquisitions and Divestures (Details Textual) $ in Thousands			1 Months Ended		12 Months Ended
	Jun. 27, 2022 shares	Jun. 21, 2022 shares	Jun. 30, 2022 USD ($) shares	Mar. 31, 2022 USD ($) shares	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Stock Issued During Period, Shares, Acquisitions | shares	3,522,117	371,517
Stock Issued During Period, Value, Acquisitions						$ 264,982
Payments to Acquire Oil and Gas Property and Equipment					$ 15,100	$ 23,000	$ 54,000
Proceeds from Sale of Oil and Gas Property and Equipment, Net							3,300
Gain (Loss) on Disposition of Oil and Gas and Timber Property, Total							$ 0
Oil and Gas, Non-operated Horizontal Well Divested, Gross, Number							1
Oil and Gas, Horizontal Well Divested, Net Productive, Number							(0.2)
Oil and Gas, Operated Vertical Wells, Gross, Number							4
Oil and Gas, Operated Vertical Wells, Net Productive, Number							(3.7)
Hannathon Petroleum, LLC Property [Member]
Business Combination, Consideration Transferred			$ 337,200
Stock Issued During Period, Shares, Acquisitions | shares			3,522,117
Stock Issued During Period, Value, Acquisitions			$ 97,200
Alamo Acquisitions [Member]
Business Combination, Consideration Transferred			$ 11,000	$ 156,100
Stock Issued During Period, Shares, Acquisitions | shares			371,517	6,960,000
Stock Issued During Period, Value, Acquisitions			$ 11,200	$ 156,600