Property, Plant, Equipment and Seismic Rental Equipment

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Property, Plant, Equipment and Seismic Rental Equipment

A summary of property, plant, equipment and seismic rental equipment is as follows (in thousands):



	December 31,
	2012			2011
Buildings	$	15,126		$	15,130
Machinery and equipment	87,127			71,550
Seismic rental equipment	10,895			2,986
Furniture and fixtures	3,403			3,377
Other	3,857			1,727
Total	120,408			94,770
Less accumulated depreciation	(86,636		)	(69,999		)
Property, plant, equipment and seismic rental equipment, net	$	33,772		$	24,771

Total depreciation expense, including amortization of assets recorded under capital leases, for 2012, 2011 and 2010 was $12.5 million, $9.4 million and $15.7 million, respectively. In 2012, the Company wrote down $5.9 million of marine seismic equipment it had leased to a marine seismic contractor. This write-down was reflected in general, administrative and other operating expenses.

- Definition

The entire disclosure for 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. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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