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Inventories (Tables)
12 Months Ended
Dec. 31, 2012
Inventory Disclosure [Abstract]  
Schedule Of Major Components Of Inventories
 
December 31,
 
2012
 
2011
Petroleum products
$
58,943

 
$
70,769

Crude oil
15,885

 
11,701

Caustic soda
5,636

 
11,312

NaHS
6,573

 
7,337

Other
13

 
5

Total inventories
$
87,050

 
$
101,124