Inventory (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventory

Inventory consists of the following (in thousands):

	March 31, 2019		December 31, 2018
Raw materials	$	1,688	$	1,846
Work-in-process		8,932		6,403
Finished goods		1,158		3,132
Total inventory	$	11,778	$	11,381