Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

PROPERTY, PLANT AND EQUIPMENT, NET

Property, plant and equipment, net consisted of the following as of December 31, 2017 and 2016 (in thousands):

	December 31,
	2017			2016
Land	$	700		$	700
Land improvements	300			300
Building and improvements	9,552			9,500
Computer equipment and software	14,073			13,866
Furniture and fixtures	2,512			2,401
Leasehold improvements	4,959			3,718
Laboratory and production equipment	8,030			6,449
Construction in progress	5,360			1,619
	45,486			38,553
Less: accumulated depreciation	(19,490		)	(14,093		)
Property, plant and equipment, net	$	25,996		$	24,460

During 2017, 2016 and 2015, depreciation expense was $7.2 million, $9.2 million, and $3.9 million, respectively.