Basis of Presentation and Summary of Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands			6 Months Ended
	May 09, 2017 class_of_stock $ / shares shares	May 09, 2017 USD ($) class_of_stock $ / shares shares	Jun. 30, 2018 $ / shares shares	Dec. 31, 2017 $ / shares
Class A Common Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 0.001	$ 0.001
Class B Common Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 0.001	$ 0.001
Bold Contribution Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of classes of common stock | class_of_stock	2	2
Closing sale price of common stock (in dollars per share) | $ / shares	$ 13.58	$ 13.58
Bold Contribution Agreement | Earthstone Energy Holdings, LLC | Bold Energy Holdings, LLC
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
EEH Units issued to Bold Holdings (in shares)	36,070,828	36,070,828
Bold Contribution Agreement | Lynden Energy Corporation | Earthstone Energy Holdings, LLC
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
EEH Units issued to Bold Holdings (in shares)	5,865,328	5,865,328
Bold Contribution Agreement | Class A Common Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Stock recapitalization ratio		1
EEH Units and Class B Common Stock converted to Class A Common Stock (in shares)		1	1
Bold Contribution Agreement | Class A Common Stock | 2014 Long Term Incentive Plan
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Shares of common stock issued in arrangement	150,000	150,000
Bold Contribution Agreement | Class A Common Stock | Bold Energy Holdings, LLC | Earthstone Energy Holdings, LLC
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of ownership interest	61.40%	61.40%
Bold Contribution Agreement | Class B Common Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
EEH Units and Class B Common Stock converted to Class A Common Stock (in shares)		1
Bold Contribution Agreement | Class B Common Stock | Bold Energy Holdings, LLC
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Cash from sale of stock | $		$ 36,071
Shares of common stock issued in arrangement	36,070,828	36,070,828
Bold Contribution Agreement | Class B Common Stock | Earthstone Energy Holdings, LLC | Bold Energy Holdings, LLC
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Cash from sale of stock | $		$ 36,071
EEH Units issued to Bold Holdings (in shares)	16,791,296	16,791,296