FIXED ASSETS (Tables)

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of fixed assets summarized by major category

Fixed assets, net, summarized by major category, consist of the following (in thousands):

	March 31,			December 31,
	2019			2018
Machinery and laboratory equipment	$	67,913		$	67,431
Leasehold improvements	59,886			57,955
Computer equipment and software	8,188			8,131
Office furniture and equipment	1,576			1,548
Construction in progress	34,646			35,163
Total	172,209			170,228
Less: accumulated depreciation	(65,158		)	(61,558		)
Fixed assets, net	$	107,051		$	108,670