Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) (Details Textual) $ in Thousands		12 Months Ended
		Dec. 31, 2023 USD ($) $ / Boe	Dec. 31, 2022 USD ($) $ / Boe
Capitalized Costs, Asset Retirement Costs		$ 3,100	$ 2,100
Capitalized Costs, Mineral Interests in Unproved Properties	[1]	0	1,584
Impairment of Oil and Gas Properties		26,680	0
Depreciation, Depletion and Amortization		$ 11,235	9,607
Oil and Gas Property, Ceiling Test, Discount Rate		10.00%
Oil and Gas Properties [Member]
Depreciation, Depletion and Amortization		$ 9,800	$ 8,500
Oil and Gas Properties, Depletion and Amortization per Unit of Production (in USD per Barrel of Oil Equivalent) | $ / Boe		15.66	13.75

[1] Unevaluated oil and natural gas properties consist of leasehold costs that are excluded from the depletion, depreciation and amortization calculation and the ceiling test until a determination about the existence of proved reserves can be completed. Unevaluated oil and natural gas properties consisted of unproved lease acquisition costs and costs paid to evaluate potential acquisition prospects of $1.6 million at December 31, 2022. On a quarterly basis, management reviews market conditions and other changes in circumstances related to the Company’s unevaluated properties and transfers the costs to evaluated properties within the full cost pool as warranted. During 2023, the unevaluated property balance was transferred to evaluated properties due to the Company evaluating its use of capital relative to its portfolio and strategic initiatives and determining that it no longer plans to fund development of its unevaluated acreage.