Inventories

12 Months Ended

Dec. 31, 2017

Inventories

Inventories

4. Inventories

Inventories consist of the following, in thousands of dollars:

	December 31, 2017		December 31, 2016
Raw materials	$	2,995	$	2,091
Work in process		8,873		8,874
Finished goods		4,436		5,836
	$	16,304	$	16,801