Oil and Gas Properties - Schedule of Oil and Gas Properties (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Oil and gas properties, at cost, using the full cost method of accounting:
Not subject to depletion	$ 291,664	$ 228,151
Subject to depletion	449,061	289,851
Total oil and gas properties, at cost	740,725	518,002
Less accumulated depreciation, depletion, and amortization	(61,103)	(27,628)
Total oil and gas properties, net	679,622	490,374
Costs not subject to depletion, cost per year	$ 80,964	$ 73,002	$ 66,139	$ 10,745	$ 60,814