Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash	$ 1,447	$ 1,494
Accounts receivable:
Oil, natural gas, and natural gas liquids revenues	33,134	16,255
Joint interest billings and other, net of allowance of $19 and $19 at March 31, 2021 and December 31, 2020, respectively	6,497	7,966
Derivative asset	196	7,509
Prepaid expenses and other current assets	3,204	1,509
Total current assets	44,478	34,733
Oil and gas properties, successful efforts method:
Proved properties	1,253,689	1,017,496
Unproved properties	233,767	233,767
Land	5,382	5,382
Total oil and gas properties	1,492,838	1,256,645
Accumulated depreciation, depletion and amortization	(315,460)	(291,213)
Net oil and gas properties	1,177,378	965,432
Other noncurrent assets:
Property, Plant and Equipment, Net	1,249	931
Derivative asset	1,495	396
Operating lease right-of-use assets	2,289	2,450
Other noncurrent assets	2,064	1,315
TOTAL ASSETS	1,228,953	1,005,257
Current liabilities:
Accounts payable	16,891	6,232
Revenues and royalties payable	25,522	27,492
Accrued expenses	18,688	16,504
Asset retirement obligation	568	447
Derivative liability	25,063	1,135
Advances	2,246	2,277
Operating lease liabilities	777	773
Finance lease liabilities	54	69
Other current liabilities	912	565
Total current liabilities	90,721	55,494
Noncurrent liabilities:
Long-term debt	223,424	115,000
Deferred tax liability	14,189	14,497
Asset retirement obligation	13,448	2,580
Derivative liability	2,566	173
Operating lease liabilities	1,674	1,840
Finance lease liabilities	0	5
Other noncurrent liabilities	854	132
Total noncurrent liabilities	256,155	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	624,916	540,074
Accumulated deficit	(201,091)	(195,258)
Total Earthstone Energy, Inc. equity	423,903	344,881
Noncontrolling interest	458,174	470,655
Total equity	882,077	815,536
TOTAL LIABILITIES AND EQUITY	1,228,953	1,005,257
Class A Common Stock
Equity:
Common stock	44	30
Class B Common Stock
Equity:
Common stock	$ 34	$ 35