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INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2014
INVENTORIES [Abstract]  
Inventories

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

in thousands
2014 

 

 
2013 

 

Inventories

 

 

 

 

 

Finished products  1

$      275,172 

 

 

$     270,603 

 

Raw materials
19,741 

 

 
29,996 

 

Products in process
1,250 

 

 
6,613 

 

Operating supplies and other
25,641 

 

 
37,394 

 

Total

$      321,804 

 

 

$     344,606 

 

 

 

 

1

Includes inventories encumbered by the purchaser's percentage of volumetric production payments (see Note 1, Deferred Revenue), as follows: December 31, 2014 — $4,792 thousand and December 31, 2013 — $4,492 thousand.