Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2018

Property, plant and equipment consists of the following (in thousands):



	March 31, 2018			December 31, 2017
Oil and natural gas properties
Proved	$	1,103,921		$	1,056,806
Unproved	91,793			100,884
Total oil and natural gas properties	1,195,714			1,157,690
Less accumulated depreciation, depletion and impairment	(486,645		)	(460,431		)
Net oil and natural gas properties capitalized costs	709,069			697,259

Land	4,500			4,500
Electrical infrastructure	131,010			131,010
Other non-oil and natural gas equipment	20,016			26,809
Buildings and structures	79,548			79,548
Total	235,074			241,867
Less accumulated depreciation and amortization	(18,209		)	(15,886		)
Other property, plant and equipment, net	216,865			225,981
Total property, plant and equipment, net	$	925,934		$	923,240