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Segment and Geographic Information (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Revenue composition by market                      
Net sales $ 391,389 $ 404,354 $ 384,693 $ 397,352 $ 391,905 $ 416,493 $ 397,985 $ 396,771 $ 1,577,788 $ 1,603,154 $ 1,455,331
Specialty Papers [Member]
                     
Revenue composition by market                      
Net sales                 894,777 875,078 842,614
Specialty Papers [Member] | Carbonless & forms [Member]
                     
Revenue composition by market                      
Net sales                 372,950 368,582 359,033
Specialty Papers [Member] | Book publishing [Member]
                     
Revenue composition by market                      
Net sales                 155,925 166,506 168,155
Specialty Papers [Member] | Envelope & converting[Member]
                     
Revenue composition by market                      
Net sales                 174,781 170,380 157,202
Specialty Papers [Member] | Engineered products [Member]
                     
Revenue composition by market                      
Net sales                 187,724 166,660 155,257
Specialty Papers [Member] | Other [Member]
                     
Revenue composition by market                      
Net sales                 $ 3,397 $ 2,950 $ 2,967