Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Restricted Stock Units	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Common Stock Restricted Stock Units Class A Common Stock	Common Stock Restricted Stock Units Class A Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Restricted Stock Units	Accumulated Deficit	Total Earthstone Energy, Inc. Equity	Total Earthstone Energy, Inc. Equity Restricted Stock Units	Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2019					29,421,131	35,260,680
Beginning balance at Dec. 31, 2019	$ 835,751				$ 29	$ 35			$ 527,246		$ (181,711)	$ 345,599		$ 490,152
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,694								2,694			2,694
Vesting of restricted stock units, net of taxes paid (in shares)					231,834
Vesting of restricted stock units, net of taxes paid	1				$ 1							1
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)								75,695
Vested restricted stock units and performance units retained by the Company in exchange for payment of recipient mandatory tax withholdings				$ (214)						$ (214)			$ (214)
Cancellation of treasury shares (in shares)					(75,695)
Class B Common Stock converted to Class A Common Stock (in shares)					199,993	(199,993)
Class B Common Stock converted to Class A Common Stock	0								2,897			2,897		(2,897)
Net loss	36,714										16,708	16,708		20,006
Ending balance (in shares) at Mar. 31, 2020					29,852,958	35,060,687
Ending balance at Mar. 31, 2020	874,946				$ 30	$ 35			532,623		(165,003)	367,685		507,261
Beginning balance (in shares) at Dec. 31, 2019					29,421,131	35,260,680
Beginning balance at Dec. 31, 2019	835,751				$ 29	$ 35			527,246		(181,711)	345,599		490,152
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Class B Common Stock converted to Class A Common Stock (in shares)			201,993
Net loss	805
Ending balance (in shares) at Jun. 30, 2020					30,020,357	35,058,687
Ending balance at Jun. 30, 2020	841,435				$ 30	$ 35			535,049		(181,342)	353,772		487,663
Beginning balance (in shares) at Mar. 31, 2020					29,852,958	35,060,687
Beginning balance at Mar. 31, 2020	874,946				$ 30	$ 35			532,623		(165,003)	367,685		507,261
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,568								2,568			2,568
Vesting of restricted stock units, net of taxes paid (in shares)		165,399
Vesting of restricted stock units, net of taxes paid	0
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)								57,810
Vested restricted stock units and performance units retained by the Company in exchange for payment of recipient mandatory tax withholdings				$ (170)						$ (170)			$ (170)
Cancellation of treasury shares (in shares)					(57,810)
Class B Common Stock converted to Class A Common Stock (in shares)			2,000		2,000	(2,000)
Class B Common Stock converted to Class A Common Stock	0								28			28		(28)
Net loss	(35,909)										(16,339)	(16,339)		(19,570)
Ending balance (in shares) at Jun. 30, 2020					30,020,357	35,058,687
Ending balance at Jun. 30, 2020	841,435				$ 30	$ 35			535,049		(181,342)	353,772		487,663
Beginning balance (in shares) at Dec. 31, 2020					30,343,421	35,009,371
Beginning balance at Dec. 31, 2020	815,536				$ 30	$ 35			540,074		(195,258)	344,881		470,655
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,605								2,605			2,605
Shares issued in connection with the IRM Acquisition (in shares)					12,719,594
Shares issued in connection with the IRM Acquisition	76,572				$ 13				76,559			76,572
Vesting of restricted stock units, net of taxes paid (in shares)							463,495
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)					257,764
Vested restricted stock units and performance units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(2,080)								(2,080)			(2,080)
Cancellation of treasury shares (in shares)					(257,764)
Class B Common Stock converted to Class A Common Stock (in shares)					578,031	(578,031)
Class B Common Stock converted to Class A Common Stock	0				$ 1	$ (1)			7,758			7,758		(7,758)
Net loss	(10,556)										(5,833)	(5,833)		(4,723)
Ending balance (in shares) at Mar. 31, 2021					44,104,541	34,431,340
Ending balance at Mar. 31, 2021	882,077				$ 44	$ 34			624,916		(201,091)	423,903		458,174
Beginning balance (in shares) at Dec. 31, 2020					30,343,421	35,009,371
Beginning balance at Dec. 31, 2020	815,536				$ 30	$ 35			540,074		(195,258)	344,881		470,655
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Class B Common Stock converted to Class A Common Stock (in shares)			611,494
Net loss	(26,387)
Ending balance (in shares) at Jun. 30, 2021					44,293,062	34,397,877
Ending balance at Jun. 30, 2021	867,680				$ 44	$ 34			626,791		(209,962)	416,907		450,773
Beginning balance (in shares) at Mar. 31, 2021					44,104,541	34,431,340
Beginning balance at Mar. 31, 2021	882,077				$ 44	$ 34			624,916		(201,091)	423,903		458,174
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,175								2,175			2,175
Vesting of restricted stock units, net of taxes paid (in shares)								155,058
Vested restricted stock units retained by the Company in exchange for payment of recipient mandatory tax withholdings (in shares)					66,343
Vested restricted stock units and performance units retained by the Company in exchange for payment of recipient mandatory tax withholdings	(741)								(741)			(741)
Cancellation of treasury shares (in shares)					(66,343)
Class B Common Stock converted to Class A Common Stock (in shares)			33,463		33,463	(33,463)
Class B Common Stock converted to Class A Common Stock	0								441			441		(441)
Net loss	(15,831)										(8,871)	(8,871)		(6,960)
Ending balance (in shares) at Jun. 30, 2021					44,293,062	34,397,877
Ending balance at Jun. 30, 2021	$ 867,680				$ 44	$ 34			$ 626,791		$ (209,962)	$ 416,907		$ 450,773