Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and equivalents	$ 7,723	$ 3,351
Oil and natural gas sales receivables	1,298	2,336
Marketable equity securities	131	164
Commodity derivative asset	0	1,844
Other current assets	572	527
Real estate assets held for sale, net of selling costs	0	150
Total current assets	9,724	8,372
Oil and natural gas properties under full cost method:
Evaluated properties	142,029	176,679
Less accumulated depreciation, depletion and amortization	(112,958)	(106,504)
Net oil and natural gas properties	29,071	70,175
Unproved industrial gas properties, not subject to amortization	9,384	0
Other assets:
Property and equipment, net	660	899
Right of use asset	528	693
Other assets	300	305
Total other assets	1,488	1,897
Total assets	49,667	80,444
Current liabilities:
Accounts payable and accrued liabilities	5,466	4,064
Accrued compensation and benefits	850	702
Revenue and royalties payable	4,836	4,857
Asset retirement obligations	1,000	1,273
Current lease obligation	196	182
Total current liabilities	12,348	11,078
Noncurrent liabilities:
Credit facility	0	5,000
Asset retirement obligations	13,083	17,217
Long-term lease obligation	415	611
Deferred tax liability	0	16
Total noncurrent liabilities	13,498	22,844
Total liabilities	25,846	33,922
Commitments and contingencies (Note 9)
Shareholders’ equity:
Common stock, $0.01 par value; 245,000,000 authorized; 27,903,197 and 25,333,870 shares issued and outstanding as of December 31, 2024 and 2023, respectively	279	253
Additional paid-in capital	221,460	218,403
Accumulated deficit	(197,918)	(172,134)
Total shareholders’ equity	23,821	46,522
Total liabilities and shareholders’ equity	$ 49,667	$ 80,444