Note 3 - Acquisitions (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Stock Issued During Period, Value, Acquisitions			$ 156,599
Payments to Acquire Oil and Gas Property and Equipment		$ 5,500	$ 6,800
Alamo Acquisitions [Member]
Business Combination, Consideration Transferred	$ 156,100
Stock Issued During Period, Shares, Acquisitions	6,960,000
Stock Issued During Period, Value, Acquisitions	$ 156,600