Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash	$ 441	$ 1,494
Accounts receivable:
Oil, natural gas, and natural gas liquids revenues	45,076	16,255
Joint interest billings and other, net of allowance of $19 and $19 at September 30, 2021 and December 31, 2020, respectively	3,058	7,966
Derivative asset	17	7,509
Prepaid expenses and other current assets	1,565	1,509
Total current assets	50,157	34,733
Oil and gas properties, successful efforts method:
Proved properties	1,487,362	1,017,496
Unproved properties	235,232	233,767
Land	5,382	5,382
Total oil and gas properties	1,727,976	1,256,645
Accumulated depreciation, depletion and amortization	(367,000)	(291,213)
Net oil and gas properties	1,360,976	965,432
Other noncurrent assets:
Office and other equipment, net of accumulated depreciation and amortization of $4,323 and $3,675 at September 30, 2021 and December 31, 2020, respectively	1,730	931
Derivative asset	453	396
Operating lease right-of-use assets	1,963	2,450
Other noncurrent assets	9,694	1,315
TOTAL ASSETS	1,424,973	1,005,257
Current liabilities:
Accounts payable	33,602	6,232
Revenues and royalties payable	30,139	27,492
Accrued expenses	20,620	16,504
Asset retirement obligation	543	447
Derivative liability	67,575	1,135
Advances	1,325	2,277
Operating lease liabilities	732	773
Finance lease liabilities	0	69
Other current liabilities	634	565
Total current liabilities	155,170	55,494
Noncurrent liabilities:
Long-term debt	278,253	115,000
Deferred tax liability	13,764	14,497
Asset retirement obligation	14,965	2,580
Derivative liability	7,730	173
Operating lease liabilities	1,394	1,840
Finance lease liabilities	0	5
Other noncurrent liabilities	3,803	132
Total noncurrent liabilities	319,909	134,227
Commitments and Contingencies (Note 13)
Equity:
Preferred stock, $0.001 par value, 20,000,000 shares authorized; none issued or outstanding	0	0
Additional paid-in capital	690,739	540,074
Accumulated deficit	(199,544)	(195,258)
Total Earthstone Energy, Inc. equity	491,280	344,881
Noncontrolling interest	458,614	470,655
Total equity	949,894	815,536
TOTAL LIABILITIES AND EQUITY	1,424,973	1,005,257
Class A Common Stock
Equity:
Common stock	51	30
Class B Common Stock
Equity:
Common stock	$ 34	$ 35