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INVENTORIES (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
INVENTORIES    
Finished product ready for sale $ 455,539 $ 415,096
Work-in-process, bulk product and raw materials 81,314 70,022
Packaging supplies 7,446 6,481
Total $ 544,299 $ 491,599