Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Summary of Property and Equipment

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

	June 30, 2019			December 31, 2018
Leasehold improvements	$	5,312		$	4,804
Lab and clean room equipment	14,199			13,787
Furniture and office equipment	14,846			15,145
Construction in progress	1,089			1,507
Property and equipment, gross	35,446			35,243
Less accumulated depreciation	(20,774		)	(17,819		)
Property and equipment, net	$	14,672		$	17,424