Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment, net

Property, plant and equipment are recorded at cost and depreciated when placed into service using the straight-line method based on their estimated useful lives as follows:

	Useful Life
Buildings and improvements	15 - 40 Years
Computer equipment and software	5 Years
Furniture and fixtures	5 Years
Leasehold improvements	Lesser of Lease or Asset Life
Laboratory and production equipment	5 Years
Land improvements	10 Years

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