Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Summary of Property and Equipment, Net

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

	December 31 ,
	2018			2017
Laboratory equipment	$	11,466		$	7,572
Furniture and fixtures		3,840			1,494
Leasehold improvements		3,640			3,425
Buildings		3,876			3,876
Total		22,822			16,367
Less: accumulated depreciation and amortization		(9,310	)		(6,951	)
Construction in progress		65,211			21,650
	$	78,723		$	31,066