Property and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

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



	Useful Lives (Years)	2014			2013
Land and building	30	$	5,636		$	5,636
Leasehold improvements	39	793			770
Office equipment and furniture	5	1,376			1,434
Software	5	573			573
Machinery and equipment	7	2,847			2,635
Vehicles	3	6,967			6,073
Total		18,192			17,121
Less accumulated depreciation		(10,830		)	(9,692		)
Total		$	7,362		$	7,429

Depreciation expense for property and equipment and the compressors described in Note 2 was $21.4 million, $18.0 million and $15.6 million for the years ended December 31, 2014, 2013 and 2012, respectively.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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