Net Income Per Common Share - Reconciliation of Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income attributable to Earthstone Energy, Inc.	$ 61,358	$ 211,456	$ 179,948	$ 322,863
Net income attributable to Earthstone Energy, Inc. from assumed conversion of Series A Convertible Preferred Stock	0	1,068	0	12,388
Net income attributable to Earthstone Energy, Inc. - Diluted	$ 61,358	$ 212,524	$ 179,948	$ 335,251
Net income per common share attributable to Earthstone Energy, Inc.:
Basic (in dollars per share)	$ 0.58	$ 2.01	$ 1.69	$ 3.91
Diluted (in dollars per share)	$ 0.57	$ 1.94	$ 1.67	$ 3.61
Weighted average common shares outstanding
Basic (in shares)	106,332,278	105,254,778	106,172,873	82,483,635
Add potentially dilutive securities:
Unvested restricted stock units (in shares)	326,041	353,889	313,342	466,453
Unvested performance units (in shares)	1,626,910	2,024,871	1,255,489	2,133,158
Series A Convertible Preferred Stock (in shares)	0	1,645,123	0	7,761,608
Diluted weighted average common shares outstanding (in shares)	108,285,229	109,278,661	107,741,704	92,844,854