Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2013

Property Plant And Equipment [Abstract]

Schedule of Property and Equipment

Property and equipment consisted of the following:

	December 31,
(in thousands)	2013			2012
Lab equipment	$	13,714		$	12,616
IT equipment		2,701			2,346
Leasehold improvements		10,523			8,200
Furniture and fixtures		340			330
Construction in process		7,635			1,774
		34,913			25,266
Less: Accumulated depreciation and amortization		(21,549	)		(18,969	)
	$	13,364		$	6,297