Inventory (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventory consisted of the following:

(in thousands)	June 30, 2018		December 31, 2017
Raw materials	$	10,631	$	10,447
Work in process	7,984		5,509
Finished goods	12,859		10,124
Total inventory	$	31,474	$	26,080