Oil and Gas Properties - Schedule of Oil and Gas Properties (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Oil and gas properties, at cost, using the full cost method of accounting:
Unevaluated property	$ 244,755	$ 228,151
Evaluated property	355,563	289,851
Total oil and gas properties, at cost	600,318	518,002
Less accumulated depreciation, depletion, and amortization	(41,214)	(27,628)
Total oil and gas properties, net	$ 559,104	$ 490,374

Oil and Gas Property, Full Cost Method, Not Subject To Depletion, Gross

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Oil and Gas Property, Full Cost Method, Subject To Depletion, Gross

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Depletion of oil and gas property carried under the full cost method.

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Oil and gas properties, gross, carried under the full cost method.

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Oil and gas properties, net of depletion, carried under the full cost method.

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