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Acquisitions and Divestitures - Schedule of Consideration Transferred, Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
May 09, 2017
Sep. 30, 2018
Sep. 30, 2017
Class A Common Stock      
Business Acquisition [Line Items]      
Total consideration transferred   $ 0 $ 2,037
Class B Common Stock      
Business Acquisition [Line Items]      
Total consideration transferred   $ 0 $ 489,842
Bold Transaction      
Business Acquisition [Line Items]      
Shares of common stock issued in arrangement 36,220,828    
Closing per share price of common stock (in dollars per share) $ 13.58    
Total consideration transferred $ 491,879    
Fair value of assets acquired:      
Cash and cash equivalents 2,355    
Other current assets 10,078    
Oil and gas properties 557,704    
Amount attributable to assets acquired 570,137    
Fair value of liabilities assumed:      
Long-term debt 58,000    
Current liabilities 17,042    
Deferred tax liability 2,857    
Noncurrent asset retirement obligations 359    
Amount attributable to liabilities assumed $ 78,258    
Bold Transaction | Class A Common Stock      
Business Acquisition [Line Items]      
Shares of common stock issued in arrangement 150,000    
Closing per share price of common stock (in dollars per share) $ 13.58    
Bold Transaction | Class B Common Stock      
Business Acquisition [Line Items]      
Closing per share price of common stock (in dollars per share) $ 13.58    
Bold Transaction | Bold Energy III LLC | Certain Employees | Class A Common Stock      
Business Acquisition [Line Items]      
Shares of common stock issued in arrangement 150,000    
Bold Transaction | Bold Energy Holdings, LLC      
Business Acquisition [Line Items]      
Shares of common stock issued in arrangement 36,070,828    
Bold Transaction | Bold Energy Holdings, LLC | Class B Common Stock      
Business Acquisition [Line Items]      
EEH Units issued to Bold Holdings (in shares) 36,070,828    
Bold Contribution Agreement      
Business Acquisition [Line Items]      
Closing per share price of common stock (in dollars per share) $ 13.58    
Bold Contribution Agreement | Class A Common Stock      
Fair value of liabilities assumed:      
EEH Units and Class B Common Stock converted to Class A Common Stock (in shares) 1 1  
Bold Contribution Agreement | Class B Common Stock      
Fair value of liabilities assumed:      
EEH Units and Class B Common Stock converted to Class A Common Stock (in shares) 1    
Bold Contribution Agreement | Bold Energy Holdings, LLC | Class B Common Stock      
Business Acquisition [Line Items]      
Shares of common stock issued in arrangement 36,070,828    
Fair value of liabilities assumed:      
Cash from sale of stock $ 36,071    
Earthstone Energy Holdings, LLC | Bold Transaction | Bold Energy Holdings, LLC      
Business Acquisition [Line Items]      
EEH Units issued to Bold Holdings (in shares) 36,070,828    
Earthstone Energy Holdings, LLC | Bold Contribution Agreement | Bold Energy Holdings, LLC      
Business Acquisition [Line Items]      
EEH Units issued to Bold Holdings (in shares) 36,070,828    
Earthstone Energy Holdings, LLC | Bold Contribution Agreement | Bold Energy Holdings, LLC | Class B Common Stock      
Business Acquisition [Line Items]      
EEH Units issued to Bold Holdings (in shares) 16,791,296    
Fair value of liabilities assumed:      
Cash from sale of stock $ 36,071