Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Summary of Property, Plant and Equipment Comprised of Fixed Assets and Oil and Gas Properties (Detail)

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Property, Plant and Equipment - Summary of Property, Plant and Equipment Comprised of Fixed Assets and Oil and Gas Properties (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Feb. 10, 2017
Dec. 31, 2016
Fixed Assets      
Accumulated depreciation $ (300)   $ (69)
Total fixed assets, net 11,884   10,993
Oil and Gas Properties      
Unproved 13,000   0
Wells in progress 332 $ 332 0
Total oil and gas properties 13,332   0
Total property, plant and equipment, net 25,216   10,993
Land      
Fixed Assets      
Fixed assets, gross 9,491   9,491
Buildings      
Fixed Assets      
Fixed assets, gross 549   549
Leasehold improvements      
Fixed Assets      
Fixed assets, gross 1,707   602
Computer, office equipment and fixtures      
Fixed Assets      
Fixed assets, gross $ 437   $ 420