Acquisitions - Consideration Transferred (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
Jan. 07, 2021	Mar. 31, 2021
Fair value of liabilities assumed:
Other current liabilities		$ 5,742
IRM Acquisition
Business Acquisition [Line Items]
Total consideration transferred		213,874
Fair value of assets acquired:
Cash		2,992
Other current assets		10,925
Oil and gas properties		225,905
Other non-current assets		258
Amount attributable to assets acquired		240,080
Fair value of liabilities assumed:
Derivative liability - current		10,177
Asset retirement obligation - noncurrent		10,287
Amount attributable to liabilities assumed		$ 26,206
Net cash consideration	$ 134,300
Cash consideration	$ 137,302
IRM Acquisition \| Class A Common Stock
Business Acquisition [Line Items]
Shares of Earthstone Class A Common Stock Issued (in shares)	12,719,594
Earthstone Class A Common Stock price as of January 7, 2021 (in dollars per share)	$ 6.02
Total consideration transferred	$ 76,572
Fair value of liabilities assumed:
Net cash consideration	134,300
Cash acquired	3,000
Cash consideration	$ 137,300

Number of shares of equity interests issued or issuable to acquire entity.

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