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Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2013

Property and equipment consisted of the following at March 31, 2013 and December 31, 2012 (in thousands):


	March 31, 2013			December 31, 2012
Equipment	$	5,545,029		$	5,387,490
Oil and natural gas properties		164,824			156,834
Buildings		67,585			66,490
Land		11,899			10,413

		5,789,337			5,621,227
Less accumulated depreciation and depletion		(2,106,587	)		(2,005,844	)

Property and equipment, net	$	3,682,750		$	3,615,383

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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