INVENTORIES

3 Months Ended

Mar. 31, 2018

INVENTORIES [Abstract]

INVENTORIES

5. 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

Inventory serves as collateral for our amended and restated credit agreement.  See Note 10.

Inventory included petrochemical products in transit valued at approximately $4.0 million and $3.7 million at March 31, 2018, and December 31, 2017, respectively.