Inventories (Tables)

12 Months Ended

Dec. 31, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories were as follows:

	December 31,
	2015		2014
	(In thousands)
Lubricants	$	14,959	$	14,241
Refined products	241		242
Inventories	$	15,200	$	14,483