INVENTORIES (Tables)

3 Months Ended

Mar. 31, 2018

INVENTORIES [Abstract]

Inventories

Inventories included the following:

	March 31, 2018		December 31, 2017
	(thousands of dollars)
Raw material	$	2,612	$	3,703
Work in process		51		27
Finished products		13,028		14,720
Total inventory	$	15,691	$	18,450