Net Income (Loss) Per Common Share - Reconciliation of Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jul. 06, 2022	Apr. 14, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Net income (loss) attributable to Earthstone Energy, Inc.	$ 211,456	$ 10,418	$ 322,863	$ (4,286)
Net income (loss) attributable to Earthstone Energy, Inc. from assumed conversion of Series A Convertible Preferred Stock	1,068	0	12,388	0
Net income (loss) attributable to Earthstone Energy, Inc. diluted	$ 212,524	$ 10,418	$ 335,251	$ (4,286)
Net income (loss) per common share attributable to Earthstone Energy, Inc.:
Basic (in dollars per share)	$ 2.01	$ 0.21	$ 3.91	$ (0.09)
Diluted (in dollars per share)	$ 1.94	$ 0.20	$ 3.61	$ (0.09)
Weighted average common shares outstanding
Basic (in shares)	105,254,778	49,243,185	82,483,635	45,406,952
Add potentially dilutive securities:
Unvested restricted stock units (in shares)	353,889	525,475	466,453	0
Unvested performance units (in shares)	2,024,871	2,894,282	2,133,158	0
Series A Convertible Preferred Stock (in shares)	1,645,123	0	7,761,608	0
Diluted weighted average common shares outstanding (in shares)	109,278,661	52,662,942	92,844,854	45,406,952
Antidilutive securities (in shares)	1,099,800	1,099,800	1,099,800	1,099,800
Preferred stock, shares issued (in shares)	0		0				0
Series A Convertible Preferred Stock
Class of Stock [Line Items]
Net income (loss) attributable to Earthstone Energy, Inc. from assumed conversion of Series A Convertible Preferred Stock	$ 1,100		$ 12,400
Add potentially dilutive securities:
Preferred stock, shares issued (in shares)	0		0			280,000	0
Class A Common Stock
Add potentially dilutive securities:
Convertible preferred stock, shares issued upon conversion (in shares)					25,225,225