Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Schedule of Property and Equipment, Net

Property and equipment, net as of December 31, 2018 and 2017 consisted of the following:

	December 31,
(in thousands)	2018			2017
Lab equipment	$	13,304		$	13,486
IT equipment		3,781			3,853
Leasehold improvements		19,392			20,790
Furniture and fixtures		306			335
Construction in process		—			30
Total property and equipment, gross		36,783			38,494
Less: Accumulated depreciation		(34,514	)		(32,027	)
Total property and equipment, net	$	2,269		$	6,467