INVENTORIES (Tables)

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories include the following at December 31:
	2020		2019
	(thousands of dollars)
Raw material	$	2,580	$	2,100
Work in process	138		142
Finished products	10,227		11,382
Total inventory	$	12,945	$	13,624