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Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Assets, Current [Abstract]    
Cash and cash equivalents $ 1,582 $ 11,061
Accounts receivable, net 34,304 20,301
Prepaid obligations 1,133 376
Other current assets 5 38
Total current assets 37,024 31,776
us-gaap_PropertyPlantAndEquipmentNetAbstract    
Oil and gas properties at cost 754,703 659,792
Less: Accumulated depletion and depreciation (448,881) (406,913)
Oil and Gas Property, Successful Effort Method, Net 305,822 252,879
Field and office equipment at cost 14,642 26,955
Less: Accumulated depreciation (12,603) (23,715)
Property, Plant and Equipment, Net 2,039 3,240
Total Property and Equipment, Net 307,861 256,119
Other assets 703 673
Total Assets 345,588 288,568
Liabilities, Current [Abstract]    
Accounts payable 42,177 15,424
Accrued property cost 7,133 33,264
Accrued liabilities 18,057 15,349
Current portion of asset retirement and other long-term obligations 630 692
Total Current Liabilities 68,025 64,809
Long-Term Bank Debt 3,000 0
Asset Retirement Obligations 14,578 14,707
Deferred income taxes 55,313 47,236
Other Long-Term Obligations 834 866
Total Liabilities 141,750 127,618
Commitments and Contingencies  
Equity, Attributable to Parent [Abstract]    
Common stock, $.10 par value; 2024 and 2023: Authorized: 2,810,000 shares, outstanding 2024: 1,790,245; outstanding 2023: 1,820,100 shares 281 281
Paid-in capital 7,555 7,555
Retained earnings 258,796 205,669
Treasury stock, at cost; 2024: 1,019,755 shares; 2023: 989,900 62,794 52,555
Total Equity 203,838 160,950
Total Liabilities and Equity 345,588 288,568
Related Party [Member]    
Liabilities, Current [Abstract]    
Due to related parties $ 28 $ 80