Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	$ (112)	$ 1,665
Current federal tax expense (benefit)	0	0
Current income tax expense	545	0
Deferred income tax expense (benefit)	(657)	1,665
Valuation allowance	17,044	16,451
Net deferred noncurrent tax assets	2,500	1,300
Deferred tax liabilities	14,496	15,154
U.S.
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	(112)	1,665
Deferred tax assets	13,300	12,700
Deferred tax liabilities	9,600	9,700
Operating loss carryforward, net	42,400
Canada
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	0	0
Deferred tax assets	3,800	3,800
Deferred tax liabilities	4,800	5,500
Operating loss carryforward, net	10,000
Lynden U S A Inc
Income Tax Disclosure [Line Items]
Current federal tax expense (benefit)	(150)	100
Lynden Arrangement | U.S.
Income Tax Disclosure [Line Items]
Operating loss carryforward, net	28,200
Earthstone Energy Holdings, LLC
Income Tax Disclosure [Line Items]
Current federal tax expense (benefit)	(610)	400
Deferred income tax expense (benefit)	$ (510)	$ 1,600