Noncontrolling Interest - Summary of Changes in Noncontrolling Interest (Details) - shares	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Class A Common Stock
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
December 31, 2017	27,584,638
December 31, 2018	28,696,321	27,584,638
Earthstone Energy Holdings, LLC
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
December 31, 2017	63,636,807
December 31, 2018	64,148,499	63,636,807
Earthstone Energy Holdings, LLC \| Class A Common Stock
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
EEH Units issued in connection with the vesting of restricted stock units and issuance of Class A Common Stock	511,692
Earthstone Energy Holdings, LLC \| EEH Units Held By Earthstone and Lynden US
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
December 31, 2017	27,584,638
December 31, 2018	28,696,321	27,584,638
Percentage of EEH Units Held By Earthstone and Lynden	44.70%	43.30%
Earthstone Energy Holdings, LLC \| EEH Units Held By Earthstone and Lynden US \| Class A Common Stock
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
EEH Units issued in connection with the vesting of restricted stock units and issuance of Class A Common Stock	511,692
Class B Common Stock converted to Class A Common Stock (shares)	599,991
Earthstone Energy Holdings, LLC \| EEH Units Held By Others
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
December 31, 2017	36,052,169
December 31, 2018	35,452,178	36,052,169
Percentage of EEH Units Held By Others	55.30%	56.70%
Earthstone Energy Holdings, LLC \| EEH Units Held By Others \| Class A Common Stock
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Class B Common Stock converted to Class A Common Stock (shares)	(599,991)

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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