Inventory (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventory consisted of the following as of the date indicated (in thousands):

	September 30, 2018		December 31, 2017
Raw materials	$	3,026	$	5,743
Work in process	4,741		4,845
Finished goods	7,251		9,469
Total inventory	$	15,018	$	20,057