Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Table Text Block]



	Estimated Useful Lives		As of December 31,
	In Years		2012			2011
			(in thousands)
Computers and software	3-5		$	11,042		$	10,986
Furniture and fixtures	5-7		7,343			7,391
Laboratory equipment	3-7		36,065			37,030
Leasehold improvements	7-10		9,991			9,934
Buildings	15-40		58,945			58,947
Land		—	2,664			2,664
Total property and equipment			126,050			126,952
Less: Accumulated depreciation and amortization			(83,416		)	(80,535		)
Net property and equipment			$	42,634		$	46,417

- 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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