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Goodwill, Other Intangible Assets, and Other Assets (Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]          
Intangible assets, gross carrying amount $ 278,469   $ 278,469   $ 278,446
Intangible assets, accumulated amortization (91,646)   (91,646)   (87,637)
Weighted average amortization period (in years) 29 years        
Amortization expense 2,021 1,930 4,009 3,862  
Future amortization expense [Abstract]          
2013 7,866   7,866    
2014 7,240   7,240    
2015 6,860   6,860    
2016 6,751   6,751    
2017 6,737   6,737    
2018 6,682   6,682    
Trademarks and Tradenames [Member]
         
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]          
Unamortized intangible assets, gross carrying amount 88,344   88,344   88,344
Customer Relationships [Member]
         
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]          
Amortized intangible assets, gross carrying amount 135,690   135,690   135,690
Intangible assets, accumulated amortization (52,644)   (52,644)   (50,083)
Weighted average amortization period (in years) 33 years        
Patents and Other Intangible Assets [Member]
         
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]          
Amortized intangible assets, gross carrying amount 54,435   54,435   54,412
Intangible assets, accumulated amortization $ (39,002)   $ (39,002)   $ (37,554)
Weighted average amortization period (in years) 14 years