Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2015

Property Plant And Equipment [Abstract]

Summary of Property and Equipment, Net

Property and equipment, net consisted of the following (in thousands):

	As of December 31,
	2015			2014
Laboratory equipment	$	2,528		$	2,697
Software and computer equipment		441			465
Furniture and fixtures		153			151
Vehicles		204			188
Leasehold improvements		1,900			1,882
Assets under construction		18			—
Property and equipment, gross		5,244			5,383
Less accumulated depreciation and amortization		(4,659	)		(4,655	)
Property and equipment, net	$	585		$	728