Inventories (Tables)

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Schedule of major classes of inventories

Our major classes of inventories were as follows as of June 30, 2019 and December 31, 2018 (in thousands):

	June 30, 2019		December 31, 2018
Raw materials	$	9,410	$	9,388
Work in process	6,816		5,932
Finished goods	8,953		11,371
Total inventories	$	25,179	$	26,691