Inventory (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventory consisted of the following:

(in thousands)	March 31, 2018		December 31, 2017
Raw materials	$	11,178	$	10,447
Work in process	10,310		5,509
Finished goods	10,598		10,124
Total inventory	$	32,086	$	26,080