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Commitments, Legal Proceedings and Contingencies, and Guarantees (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Long-term Purchase Commitment [Line Items]    
Long-term debt $ 344,589 $ 294,266
6.375% Senior Notes Due 2020 [Member] | Senior notes [Member]    
Long-term Purchase Commitment [Line Items]    
Long-term debt $ 299,990 $ 299,990
Interest rate 6.375%  
Inventories [Member] | Log and fiber [Member]    
Long-term Purchase Commitment [Line Items]    
Purchase obligations and commitments $ 74,000  
Inventories [Member] | Energy [Member]    
Long-term Purchase Commitment [Line Items]    
Purchase obligations and commitments $ 12,900