INVENTORIES (Tables)

12 Months Ended

Dec. 31, 2017

INVENTORIES [Abstract]

Inventories

Inventories include the following at December 31:

	2017		2016
	(thousands of dollars)
Raw material	$	3,703	$	3,627
Work in process		27		12
Finished products		14,720		14,232
Total inventory	$	18,450	$	17,871