Net Loss Per Common Share - Reconciliation of Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net loss attributable to Earthstone Energy, Inc.	$ (33,478)	$ (5,833)
Net loss per common share attributable to Earthstone Energy, Inc.:
Basic (in dollars per share)	$ (0.53)	$ (0.14)
Diluted (in dollars per share)	$ (0.53)	$ (0.14)
Weighted average common shares outstanding
Basic (in shares)	63,445,649	42,778,916
Add potentially dilutive securities:
Unvested restricted stock units (in shares)	0	0
Unvested performance units (in shares)	0	0
Diluted weighted average common shares outstanding (in shares)	63,445,649	42,778,916