Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Income Tax Disclosure [Line Items]
Tax Act, provisional income tax expense		$ 7,800
Pre-tax net income (loss)	$ 12,440		$ 691
Earthstone Energy Holdings, LLC
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	900		290
Pre-tax net income (loss)			830
Lynden US
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	$ 200		(40)
Pre-tax net income (loss)			$ (130)