Inventory (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventory consisted of the following:

	December 31,
(in thousands)	2018		2017
Raw materials	$	11,100	$	10,447
Work in process	4,261		5,509
Finished goods	17,658		10,124
Total inventory	$	33,019	$	26,080