Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Class B Common Stock	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total Earthstone Energy, Inc. Equity	Noncontrolling Interest	Restricted Stock Units Common Stock Class A Common Stock
Beginning balance (in shares) at Dec. 31, 2017			27,584,638	36,052,169
Beginning balance at Dec. 31, 2017	$ 725,732		$ 28	$ 36	$ 503,932	$ (224,822)	$ 279,174	$ 446,558
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1,940				1,940		1,940
Vesting of restricted stock units, net of taxes paid (in shares)									86,272
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)			28,664
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(466)				(466)		(466)
Cancellation of treasury shares (in shares)			(28,664)
Class B Common Stock converted to Class A Common Stock (in shares)			194,046	(194,046)
Class B Common Stock converted to Class A Common Stock					2,409		2,409	(2,409)
Net income	12,191					5,321	5,321	6,870
Ending balance (in shares) at Mar. 31, 2018			27,864,956	35,858,123
Ending balance at Mar. 31, 2018	739,397		$ 28	$ 36	507,815	(219,501)	288,378	451,019
Beginning balance (in shares) at Dec. 31, 2017			27,584,638	36,052,169
Beginning balance at Dec. 31, 2017	725,732		$ 28	$ 36	503,932	(224,822)	279,174	446,558
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Class B Common Stock converted to Class A Common Stock (in shares)		389,135
Net income	14,227
Ending balance (in shares) at Sep. 30, 2018			28,400,421	35,663,034
Ending balance at Sep. 30, 2018	744,093		$ 28	$ 36	512,960	(218,627)	294,397	449,696
Beginning balance (in shares) at Mar. 31, 2018			27,864,956	35,858,123
Beginning balance at Mar. 31, 2018	739,397		$ 28	$ 36	507,815	(219,501)	288,378	451,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,073				2,073		2,073
Vesting of restricted stock units, net of taxes paid (in shares)									255,313
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)			83,762
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(648)				(648)		(648)
Cancellation of treasury shares (in shares)			(83,762)
Class B Common Stock converted to Class A Common Stock (in shares)			11,195	(11,195)
Class B Common Stock converted to Class A Common Stock	0				141		141	(141)
Net income	1,472					650	650	822
Ending balance (in shares) at Jun. 30, 2018			28,131,464	35,846,928
Ending balance at Jun. 30, 2018	742,294		$ 28	$ 36	509,381	(218,851)	290,594	451,700
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1,522				1,522		1,522
Vesting of restricted stock units, net of taxes paid (in shares)									85,063
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)			30,511
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(287)				(287)		(287)
Cancellation of treasury shares (in shares)			(30,511)
Class B Common Stock converted to Class A Common Stock (in shares)		183,894	183,894	(183,894)
Class B Common Stock converted to Class A Common Stock					2,344		2,344	(2,344)
Net income	564					224	224	340
Ending balance (in shares) at Sep. 30, 2018			28,400,421	35,663,034
Ending balance at Sep. 30, 2018	744,093		$ 28	$ 36	512,960	(218,627)	294,397	449,696
Beginning balance (in shares) at Dec. 31, 2018			28,696,321	35,452,178
Beginning balance at Dec. 31, 2018	826,492		$ 29	$ 35	517,073	(182,497)	334,640	491,852
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,212				2,212		2,212
Vesting of restricted stock units, net of taxes paid (in shares)									166,140
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)			59,261
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(396)				(396)		(396)
Cancellation of treasury shares (in shares)			(59,261)
Net income	(38,443)					(17,204)	(17,204)	(21,239)
Ending balance (in shares) at Mar. 31, 2019			28,862,461	35,452,178
Ending balance at Mar. 31, 2019	790,031		$ 29	$ 35	518,889	(199,634)	319,319	470,712
Beginning balance (in shares) at Dec. 31, 2018			28,696,321	35,452,178
Beginning balance at Dec. 31, 2018	826,492		$ 29	$ 35	517,073	(182,497)	334,640	491,852
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Class B Common Stock converted to Class A Common Stock (in shares)		35,732
Net income	7,220
Ending balance (in shares) at Sep. 30, 2019			29,150,220	35,416,446
Ending balance at Sep. 30, 2019	839,731		$ 29	$ 35	523,402	(179,087)	344,379	495,352
Beginning balance (in shares) at Mar. 31, 2019			28,862,461	35,452,178
Beginning balance at Mar. 31, 2019	790,031		$ 29	$ 35	518,889	(199,634)	319,319	470,712
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,261				2,261		2,261
Vesting of restricted stock units, net of taxes paid (in shares)									133,311
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)			43,344
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(265)				(265)		(265)
Cancellation of treasury shares (in shares)			(43,344)
Class B Common Stock converted to Class A Common Stock (in shares)			35,732	(35,732)
Class B Common Stock converted to Class A Common Stock	0				476		476	(476)
Net income	19,536					8,777	8,777	10,759
Ending balance (in shares) at Jun. 30, 2019			29,031,504	35,416,446
Ending balance at Jun. 30, 2019	811,563		$ 29	$ 35	521,361	(190,857)	330,568	480,995
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,207				2,207		2,207
Vesting of restricted stock units, net of taxes paid (in shares)									118,716
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)			49,111
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(166)				(166)		(166)
Cancellation of treasury shares (in shares)			(49,111)
Class B Common Stock converted to Class A Common Stock (in shares)		35,732
Net income	26,127					11,770	11,770	14,357
Ending balance (in shares) at Sep. 30, 2019			29,150,220	35,416,446
Ending balance at Sep. 30, 2019	$ 839,731		$ 29	$ 35	$ 523,402	$ (179,087)	$ 344,379	$ 495,352