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Related Party Transactions (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2011
Related Party Transactions [Abstract]      
Ownership percentage in STV 29.00%   29.00%
Purchase of pulp from STV $ 2.7 $ 3.4