Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2011

Property and Equipment

Schedule of property and equipment

	December 31,
(in thousands)	2011			2010
Computer equipment	$	3,158		$	2,473
Software		4,628			4,592
Furniture and fixtures		3,821			3,689
Laboratory equipment		28,894			27,006
Leasehold improvements		17,263			16,101
		57,764			53,861
Less accumulated depreciation and amortization		(47,392	)		(43,646	)
Property and equipment, net	$	10,372		$	10,215