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, 2024		Dec. 31, 2023		Dec. 31, 2022
Standardized measure of discounted future net cash flows, beginning of year		$ 2,607,704	[1]	$ 3,416,508	[1]	$ 1,118,809
Sales of crude oil and natural gas, net of production costs		(877,493)		(907,459)		(647,647)
Extensions and discoveries, net of future development costs (1)	[1]	772,541		1,202,674		1,785,822
Net changes in prices and production costs		(547,790)		(1,404,147)		909,053
Changes in estimated future development costs (3)	[1]	110,664		(37,820)		(23,647)
Purchases of minerals-in-place		0		4,344		499,478
Sales of reserves-in-place		0		(25,069)		0
Revisions of previous quantity estimates		361,064		(390,282)		(354,868)
Accretion of discount		288,117		395,656		134,338
Net changes in income taxes (1)		(130,265)		266,579		(315,478)
Net changes in timing of production and other		410,455		86,720		310,648
Standardized measure of discounted future net cash flows, end of year (3)	[1]	$ 2,994,997		$ 2,607,704		$ 3,416,508

[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.