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Trade Accounts Receivable, Net - Analysis (Table) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Trade Accounts Receivable, Net [Abstract]      
Trade accounts receivable $ 5,969 $ 7,901  
Allowance for doubtful debts 0 (3,139) 0
Trade Accounts Receivable, Net $ 5,969 $ 4,762