Acquisitions - Narrative (Details) $ / shares in Units, $ in Thousands				2 Months Ended		3 Months Ended			9 Months Ended
	Nov. 02, 2021 USD ($) $ / shares shares	Jul. 20, 2021 USD ($) $ / shares shares	Jan. 07, 2021 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) $ / shares	Jun. 30, 2021 USD ($) seller	Sep. 30, 2021 USD ($) $ / shares	Jun. 30, 2021 USD ($) seller	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2020 USD ($)	Dec. 31, 2020 $ / shares
Business Acquisition [Line Items]
Transaction costs						$ 293		$ (705)	$ 2,906		$ (324)
Class A Common Stock
Business Acquisition [Line Items]
Common stock, par value (in dollars per share) | $ / shares				$ 0.001		$ 0.001			$ 0.001	$ 0.001		$ 0.001
Tracker And Sequel Aquisitions
Business Acquisition [Line Items]
Asset acquisition pro forma revenue				$ 16,600
Asset acquisition pro forma operating expenses				$ 5,600
Tracker And Sequel Aquisitions | Class A Common Stock
Business Acquisition [Line Items]
Shares of earthstone class A common stock issued (in shares) | shares		6,200,000
Class A Common Stock consideration		$ 61,814
Earthstone class A common stock price (in dollar per share) | $ / shares		$ 9.97
Tracker Purchase Agreement
Business Acquisition [Line Items]
Cash consideration		$ 22,500
Shares of earthstone class A common stock issued (in shares) | shares		4,700,000
Tracker Purchase Agreement | Significant Shareholder
Business Acquisition [Line Items]
Asset acquisition, percentage of voting interest acquired				49.00%		49.00%			49.00%	49.00%
Tracker Purchase Agreement | Class A Common Stock
Business Acquisition [Line Items]
Shares of earthstone class A common stock issued (in shares) | shares		4,700,000
Sequel Purchase Agreement
Business Acquisition [Line Items]
Cash consideration		$ 45,300
Shares of earthstone class A common stock issued (in shares) | shares		1,500,000
Sequel Purchase Agreement | Class A Common Stock
Business Acquisition [Line Items]
Share price (in dollars per share) | $ / shares		$ 9.97
Foreland Acquisition
Business Acquisition [Line Items]
Asset acquisition, deposit payable				$ 6,100		$ 6,100			$ 6,100	$ 6,100
Foreland Acquisition | Subsequent Event
Business Acquisition [Line Items]
Cash consideration	$ 49,200
Shares of earthstone class A common stock issued (in shares) | shares	2,611,111
Earthstone class A common stock price (in dollar per share) | $ / shares	$ 10.77
IRM Acquisition
Business Acquisition [Line Items]
Net cash consideration			$ 140,400
Pro forma revenue						20,800				65,100
Pro forma operating expense						9,600				$ 33,700
Transaction costs						$ 100			$ 3,900
Total consideration transferred			$ 216,938
IRM Acquisition | Class A Common Stock
Business Acquisition [Line Items]
Shares acquired (in shares) | shares			12,719,594
Common stock, par value (in dollars per share) | $ / shares			$ 0.001
Earthstone Class A common stock price as of January 7, 2021 (in dollars per share) | $ / shares			$ 6.02
Eagle Ford Acquisitions
Business Acquisition [Line Items]
Number of separate sellers | seller					4		4
Total consideration transferred					$ 48,000		$ 48,000