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INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2017
INVENTORIES [Abstract]  
Inventories



 

 

 

 

 

 

 



 

 

 

 

 

 

 

in thousands

 2017 

 

 

 2016 

 

Inventories

 

 

 

 

 

Finished products  1

$      327,711 

 

 

$     293,619 

 

Raw materials

 27,152 

 

 

 22,648 

 

Products in process

 1,827 

 

 

 1,480 

 

Operating supplies and other

 27,648 

 

 

 27,869 

 

Total

$      384,338 

 

 

$     345,616 

 





 

1

Includes inventories encumbered by volumetric production payments (see Note 1, caption Deferred Revenue), as follows: December 31, 2017 — $2,808 thousand and December 31, 2016 — $2,841 thousand.