2. Inventories

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories are stated at the lower of cost or market. Cost is determined by using the first-in, first-out method. The following table details the major components of inventories (in thousands):

	March 31,		December 31,
	2019		2018
Raw materials	$	14,789	$	14,994
Work in process		7,582		7,214
Finished goods		10,430		11,364
Total inventories	$	32,801	$	33,572