Note 5 - Oil and Natural Gas Production Activities (Details Textual) $ in Thousands	12 Months Ended
Dec. 31, 2023 USD ($) $ / bbl $ / MMBTU	Dec. 31, 2022 USD ($)
Impairment of Oil and Gas Properties	$ 26,680	$ 0
Oil and Gas Property, Ceiling Test, Discount Rate	10.00%
Crude Oil [Member]
Oil and Gas, Average Sale Price (in USD per Barrel of Oil) \| $ / bbl	78.22
Natural Gas and Natural Gas Liquids [Member]
Oil and Gas, Average Sale Price (in USD per Barrel of Oil) \| $ / MMBTU	2.64
Unproven Properties Transferred to Evaluated Properties [Member]
Impairment of Oil and Gas Properties	$ 1,600

The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 35
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482450/932-360-35-11

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration