Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2016

Property Plant And Equipment [Abstract]

Property and Equipment

Property and equipment consisted of the following at June 30, 2016 and December 31, 2015 (in thousands):

	June 30,			December 31,
	2016			2015
Equipment	$	6,885,227		$	6,963,148
Oil and natural gas properties		199,591			200,923
Buildings		97,054			96,470
Land		22,370			22,370
		7,204,242			7,282,911
Less accumulated depreciation, depletion and impairment		(3,563,348	)		(3,362,203	)
Property and equipment, net	$	3,640,894		$	3,920,708