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Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Schedule of Proved Reserves (Details)
 12 Months Ended
Dec. 31, 2023
bbl
MMcf
Dec. 31, 2022
bbl
MMcf
Oil [Member]    
Reserve quantities, beginning of year (Barrel of Oil) | bbl 5,140,090 1,021,620
Revisions of previous estimates (Barrel of Oil) | bbl (822,786) (153,434)
Discoveries and extensions (Barrel of Oil) | bbl 0 0
Purchases of minerals in place (Barrel of Oil) | bbl 0 4,777,193
Sale of minerals in place (Barrel of Oil) | bbl (742,798) (108,833)
Production (Barrel of Oil) | bbl (391,645) (396,456)
Reserve quantities, end of year (Barrel of Oil) | bbl 3,182,861 5,140,090
Natural Gas [Member]    
Reserve quantities, beginning of year (Barrel of Oil) | MMcf [1] 16,348,264 1,938,048
Revisions of previous estimates (Barrel of Oil) | MMcf [1] (3,421,047) 4,066,007
Discoveries and extensions (Barrel of Oil) | MMcf [1] 0 0
Purchases of minerals in place (Barrel of Oil) | MMcf [1] 0 11,753,283
Sale of minerals in place (Barrel of Oil) | MMcf [1] (1,448,181) (64,338)
Production (Barrel of Oil) | MMcf [1] (1,396,650) (1,344,736)
Reserve quantities, end of year (Barrel of Oil) | MMcf [1] 10,082,386 16,348,264
[1] Mcf equivalents (Mcfe) consist of natural gas reserves in mcf plus NGLs converted to mcf using a factor of 6 mcf for each barrel of NGL.