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Summary of Significant Accounting Policies 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 |  |
Inventories valued using the LIFO method, amount | 200,800,000 | 194,000,000 |  |
Inventory values before LIFO inventory reserve | 594,291,000 | 332,268,000 |  |
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 |  |

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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