Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2014

Property and Equipment

Property and equipment consisted of the following at June 30, 2014 and December 31, 2013 (in thousands):

	June 30, 2014			December 31, 2013
Equipment	$	6,168,403		$	5,749,975
Oil and natural gas properties		200,205			183,571
Buildings		81,611			80,050
Land		12,055			12,054
		6,462,274			6,025,650
Less accumulated depreciation and depletion		(2,588,664	)		(2,390,109	)
Property and equipment, net	$	3,873,610		$	3,635,541