Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 5,647	$ 518
Restricted cash	400	1,000
Accrued production receivable	128,171	91,421
Trade and other receivables, net	18,322	19,682
Derivative assets	236	187
Prepaids	9,043	14,038
Total current assets	161,819	126,846
Oil and natural gas properties (using full cost accounting)
Proved properties	936,742	851,208
Unevaluated properties	86,878	85,304
CO2 properties	188,516	188,288
Pipelines	133,722	133,485
Other property and equipment	92,037	86,610
Less accumulated depletion, depreciation, amortization and impairment	(89,538)	(41,095)
Net property and equipment	1,348,357	1,303,800
Operating lease right-of-use assets	19,832	20,342
Derivative assets	3,021	0
Intangible assets, net	95,096	97,362
Other assets	93,035	86,408
Total assets	1,721,160	1,634,758
Current liabilities
Accounts payable and accrued liabilities	118,189	112,671
Oil and gas production payable	61,960	49,165
Derivative liabilities	129,124	53,865
Current maturities of long-term debt	51,499	68,008
Operating lease liabilities	2,660	1,350
Total current liabilities	363,432	285,059
Long-term liabilities
Long-term debt, net of current portion	75,000	70,000
Asset retirement obligations	223,465	179,338
Derivative liabilities	10,188	5,087
Deferred tax liabilities, net	1,224	1,274
Operating lease liabilities	18,961	19,460
Other liabilities	26,964	20,872
Total long-term liabilities	355,802	296,031
Commitments and contingencies (Note 8)
Stockholders' equity
Preferred stock, $.001 par value, 50,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $.001 par value, 250,000,000 shares authorized; 50,005,619 and 49,999,999 shares issued, respectively	50	50
Paid-in capital in excess of par	1,122,176	1,104,276
Accumulated deficit	(120,300)	(50,658)
Total stockholders' equity	1,001,926	1,053,668
Total liabilities and stockholders' equity	$ 1,721,160	$ 1,634,758