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Inventories (Notes)
3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
6. Inventories
Inventories were as follows:
 
March 31,
2015
 
December 31,
2014
 
(In thousands)
Lubricants
$
14,819

 
$
14,241

Refined products
215

 
242

Inventories
$
15,034

 
$
14,483