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Acquisitions - Schedule of Consideration Transferred, Fair Value of Assets Acquired and Liabilities Assumed and Resulting Goodwill (Details) - USD ($)
$ / shares in Units, $ in Thousands
May 18, 2016
Mar. 31, 2017
Dec. 31, 2016
Fair Value of Assets Acquired:      
Goodwill   $ 17,620 $ 17,620
Lynden Arrangement [Member]      
Business Acquisition [Line Items]      
Shares of Earthstone common stock issued in the Arrangement 3,700,279    
Closing per share price of Earthstone common stock as of May 18, 2016 $ 12.35    
Total consideration to Lynden shareholders $ 45,699    
Fair Value of Liabilities Assumed:      
Credit facility 36,597    
Current liabilities 1,915    
Deferred tax liability 15,240    
Asset retirement obligations 250    
Total consideration plus liabilities assumed 99,701    
Fair Value of Assets Acquired:      
Cash and cash equivalents 5,263    
Current assets 2,019    
Amount attributable to assets acquired 82,081    
Goodwill 17,620    
Lynden Arrangement [Member] | Proved Oil and Gas Properties [Member]      
Fair Value of Assets Acquired:      
Oil and natural gas properties 48,199    
Lynden Arrangement [Member] | Unproved Oil and Gas Properties [Member]      
Fair Value of Assets Acquired:      
Oil and natural gas properties $ 26,600