Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property, plant and equipment, net
Property, plant and equipment, gross	$ 39,212	$ 38,553
Less: accumulated depreciation	(16,504)	(14,093)
Property, plant and equipment, net	22,708	24,460
Land
Property, plant and equipment, net
Property, plant and equipment, gross	700	700
Land improvements
Property, plant and equipment, net
Property, plant and equipment, gross	300	300
Building and improvements
Property, plant and equipment, net
Property, plant and equipment, gross	9,500	9,500
Computer equipment and software
Property, plant and equipment, net
Property, plant and equipment, gross	14,190	13,866
Furniture and fixtures
Property, plant and equipment, net
Property, plant and equipment, gross	2,401	2,401
Leasehold improvements
Property, plant and equipment, net
Property, plant and equipment, gross	3,718	3,718
Laboratory and production equipment
Property, plant and equipment, net
Property, plant and equipment, gross	6,638	6,449
Construction in progress
Property, plant and equipment, net
Property, plant and equipment, gross	$ 1,765	$ 1,619