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PREPAID AND OTHER CURRENT ASSETS (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Prepaid and Other Current Assets [Abstract]    
Prepaid supplies $ 26,616 $ 17,413
Prepaid Taxes 15,298 0
Deposits Assets, Current 8,824 1,460
Prepaid royalty 4,985 4,299
Value Added Tax Receivable, Current 4,114 0
Prepaid Insurance 4,576 71
Other 10,727 5,006
Prepaid and other current assets $ 75,140 $ 28,249