Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Schedule of major classes of inventories

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

	March 31, 2019		December 31, 2018
Raw materials	$	9,978	$	9,388
Work in process	6,412		5,932
Finished goods	13,274		11,371
Total inventories	$	29,664	$	26,691