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Inventories
12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
7. Inventories
Inventories were as follows:
 
December 31,
 
2015
 
2014
 
(In thousands)
Lubricants
$
14,959

 
$
14,241

Refined products
241

 
242

Inventories
$
15,200

 
$
14,483