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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Oil and natural gas properties    
Proved $ 1,390,054 $ 1,269,091
Unproved 46,274 60,152
Total oil and natural gas properties 1,436,328 1,329,243
Less: accumulated depreciation, depletion and impairment (652,709) (580,132)
Net oil and natural gas properties 783,619 749,111
Property, Plant and Equipment, net    
Property, plant and equipment, gross 228,134 226,182
Less accumulated depreciation and amortization (30,428) (25,344)
Other property, plant and equipment, net 197,706 200,838
Total property, plant and equipment, net 981,325 949,949
Land    
Property, Plant and Equipment, net    
Property, plant and equipment, gross 4,400 4,400
Electrical infrastructure    
Property, Plant and Equipment, net    
Property, plant and equipment, gross 131,176 131,176
Other non-oil and natural gas equipment    
Property, Plant and Equipment, net    
Property, plant and equipment, gross 13,327 13,458
Buildings and structures    
Property, Plant and Equipment, net    
Property, plant and equipment, gross 77,148 77,148
Financing leases    
Property, Plant and Equipment, net    
Property, plant and equipment, gross $ 2,083 $ 0