Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
REVENUES
Revenues	$ 41,047	$ 39,204	$ 107,848	$ 124,474
OPERATING COSTS AND EXPENSES
Lease operating expense	7,044	6,419	21,971	20,485
Production and ad valorem taxes	2,696	2,698	7,198	8,001
Rig termination expense	0	0	426	0
Depreciation, depletion and amortization	28,538	14,079	76,096	42,281
Impairment expense	2,115	0	62,548	0
General and administrative expense	5,796	6,057	19,615	19,948
Transaction costs	(705)	215	(324)	797
Accretion of asset retirement obligation	47	52	137	160
Exploration expense	0	0	298	0
Total operating costs and expenses	45,531	29,520	187,965	91,672
(Loss) gain on sale of oil and gas properties	0	(120)	198	(446)
(Loss) income from operations	(4,484)	9,564	(79,919)	32,356
OTHER INCOME (EXPENSE)
Interest expense, net	(1,186)	(1,609)	(4,207)	(4,735)
(Loss) gain on derivative contracts, net	(6,040)	18,726	73,065	(19,672)
Other income (expense), net	(18)	21	120	(1)
Total other income (expense)	(7,244)	17,138	68,978	(24,408)
(Loss) income before income taxes	(11,728)	26,702	(10,941)	7,948
Income tax expense	(130)	(575)	(112)	(728)
Net (loss) income	(11,858)	26,127	(11,053)	7,220
Less: Net (loss) income attributable to noncontrolling interest	(6,413)	14,357	(5,977)	3,877
Net (loss) income attributable to Earthstone Energy, Inc.	$ (5,445)	$ 11,770	$ (5,076)	$ 3,343
Net (loss) income per common share attributable to Earthstone Energy, Inc.:
Basic (in dollars per share)	$ (0.18)	$ 0.41	$ (0.17)	$ 0.12
Diluted (in dollars per share)	$ (0.18)	$ 0.41	$ (0.17)	$ 0.12
Weighted average common shares outstanding:
Basic (in shares)	30,073,635	29,032,842	29,810,705	28,883,907
Diluted (in shares)	30,073,635	29,032,842	29,810,705	28,883,907
Oil Revenue [Member]
REVENUES
Revenues	$ 33,158	$ 35,443	$ 93,017	$ 111,657
Natural Gas [Member]
REVENUES
Revenues	2,642	903	4,855	2,126
Natural Gas Liquids [Member]
REVENUES
Revenues	$ 5,247	$ 2,858	$ 9,976	$ 10,691