v3.19.3.a.u2
INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory Table [Text Block]
Inventories consisted of the following:
 
December 31,
 
2019
 
2018
 
(Thousands of Dollars)
Petroleum products
$
8,646

 
$
4,853

Materials and supplies
3,747

 
3,581

Total
$
12,393

 
$
8,434