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Inventories
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Inventories

3. Inventories
The major components of inventories were as follows:
 
September 30,
2013
 
December 31,
2012
Petroleum products
$
85,121

 
$
58,943

Crude oil
26,767

 
15,885

Caustic soda
2,028

 
5,636

NaHS
5,181

 
6,573

Other
25

 
13

Total
$
119,122

 
$
87,050


Inventories are valued at the lower of cost or market. The market value of inventories was below recorded costs by approximately $0.8 million at September 30, 2013, therefore we reduced the value of inventory in our Unaudited Condensed Consolidated Financial Statements for this difference. At December 31, 2012, market values of our inventories exceeded recorded costs.