Property and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

As of December 31, 2016 and 2015, property and equipment, net consists of the following (in thousands):

	2016			2015			Depreciable Lives
Computer equipment	$	2,991		$	2,426		3 years
Software	10,508			9,900			3 years
Office furniture and equipment	2,645			2,524			5 to 6 years
Laboratory equipment	47,938			43,286			7 years
Leasehold improvements	13,333			12,735			Shorter of asset life or lease term
Less: accumulated depreciation	(56,568		)	(48,975		)
	$	20,847		$	21,896

During 2015, the Company disposed of laboratory equipment with a gross carrying amount of $0.3 million and accumulated depreciation of $0.3 million. The Company did not dispose of any property and equipment during 2016. Depreciation and amortization expense amounted to $7.6 million in each of the years ended December 31, 2016, 2015 and 2014.