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Summary of Significant Accounting Policies - Additional Information (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
acre
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Significant Accounting Policies [Line Items]        
Research and development costs $ 11,500,000 $ 11,300,000 $ 12,500,000  
Cash and cash equivalents 190,960,000 207,393,000 156,313,000 196,556,000
Cash equivalents 156,600,000 203,500,000    
Allowance for doubtful accounts 3,900,000 1,900,000    
Customer returns, allowances and earned discounts as a percentage of gross selling price 1.00%      
Reserve for customer accounts receivable, percentage 1.00%      
Reserve for customer deductions 6,700,000 3,400,000    
Interest capitalization, construction in progress 1,700,000 800,000 7,100,000  
Intangible asset, useful life, in years 15 years 4 months 10 days 16 years 5 months 13 days    
Goodwill 526,789,000 67,160,000 58,214,000  
Area leased under timberland cutting rights (acres) 88,000      
Area leased where fiber farms are operated (acres) 9,000      
Software amortization expense 1,100,000 900,000 600,000  
Minimum
        
Significant Accounting Policies [Line Items]        
Term of senior credit facilities and notes, in years 5      
Maximum
        
Significant Accounting Policies [Line Items]        
Term of senior credit facilities and notes, in years 10      
Foreign operations
        
Significant Accounting Policies [Line Items]        
Cash and cash equivalents 7,100,000      
Customer Relationships
        
Significant Accounting Policies [Line Items]        
Intangible asset, useful life, in years 15 years 4 months 28 days 16 years 8 months 12 days    
Customer Relationships | Minimum
        
Significant Accounting Policies [Line Items]        
Intangible asset, useful life, in years 6 years      
Customer Relationships | Maximum
        
Significant Accounting Policies [Line Items]        
Intangible asset, useful life, in years 40 years      
Trademarks and Trade Names
        
Significant Accounting Policies [Line Items]        
Intangible asset, useful life, in years 14 years 8 months 16 days 2 years 7 months 6 days    
Trademarks and Trade Names | Minimum
        
Significant Accounting Policies [Line Items]        
Intangible asset, useful life, in years 3 years      
Trademarks and Trade Names | Maximum
        
Significant Accounting Policies [Line Items]        
Intangible asset, useful life, in years 20 years      
Cutting Rights and Fiber Farms
        
Significant Accounting Policies [Line Items]        
Depletion expense 2,500,000 700,000 0  
Other Long-Term Assets
        
Significant Accounting Policies [Line Items]        
Unamortized deferred financing costs 14,100,000 5,000,000    
Long-term lease costs capitalization (Cutting rights) 27,600,000 27,400,000    
Capitalized Fiber Farm Costs 9,400,000      
Net capitalized software costs $ 5,700,000 $ 1,100,000