Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets
Net operating loss carryforward	$ 27,025	$ 17,765
Stock-based compensation	922	1,973
Intangibles	257	304
Derivative instruments	606	0
Interest expense limitation	19,243	2,254
Organizational expenses and other	3,306	4,477
Total deferred tax assets	51,359	26,773
Deferred tax liabilities:
Oil and gas properties, and other property and equipment, principally due to intangible drilling costs	(43,414)	(34,332)
Derivative instruments	0	(4,811)
Net deferred tax assets (liabilities)	7,945
Net deferred tax assets (liabilities)		(12,370)
Valuation allowance for deferred tax assets	(8,876)	0
Net deferred tax liability, net of valuation allowance	$ (931)	$ (12,370)