Property, Plant and Equipment - Summary of Property, Plant and Equipment Comprised of Fixed Assets and Oil and Gas Properties (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Feb. 10, 2017	Dec. 31, 2016
Fixed Assets
Accumulated depreciation	$ (208)		$ (69)
Total fixed assets, net	12,042		10,993
Oil and Gas Properties
Unproved	13,000
Wells in progress	332	$ 332
Total oil and gas properties	13,332
Total property, plant and equipment, net	25,374		10,993
Land [Member]
Fixed Assets
Fixed assets, gross	9,491		9,491
Buildings [Member]
Fixed Assets
Fixed assets, gross	549		549
Leasehold Improvements [Member]
Fixed Assets
Fixed assets, gross	1,774		602
Computer, Office Equipment and Fixtures [Member]
Fixed Assets
Fixed assets, gross	$ 436		$ 420