Note 17 - Supplemental Crude Oil and Natural Gas Disclosures (Unaudited) - Changes in Standardized Measure of Discounted Future (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Standardized measure of discounted future net cash flows, beginning of year		$ 3,416,508	[1]	$ 1,118,809	[1]	$ 222,192
Sales of crude oil and natural gas, net of production costs		(907,459)		(647,647)		(184,325)
Extensions and discoveries, net of future development costs (1)	[1]	1,202,674		1,785,822		987,689
Net changes in prices and production costs		(1,404,147)		909,053		272,889
Changes in estimated future development costs (3)	[1]	(37,820)		(23,647)		(13,551)
Purchases of minerals-in-place		4,344		499,478		31,353
Sales of reserves-in-place		(25,069)		0		(3,067)
Revisions of previous quantity estimates		(390,282)		(354,868)		(40,466)
Accretion of discount		395,656		134,338		23,419
Net changes in income taxes (1)		266,579		(315,478)		(212,574)
Net changes in timing of production and other		86,720		310,648		35,250
Standardized measure of discounted future net cash flows, end of year (3)	[1]	$ 2,607,704		$ 3,416,508		$ 1,118,809

[1] The standardized measure of discounted future net cash flows reflects, within the category for future development costs, all estimated future costs that will be incurred to settle our asset retirement obligations, including costs for dismantlement, restoration, and abandonment of the existing wells (including both active and inactive wells on leases and future proved undeveloped locations), in each case in compliance with FASB ASC 932-235-50-36.