Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivable, net of allowance for doubtful accounts and customer deductions of $6,795 and $5,353 as of September 30, 2013 and December 31, 2012, respectively Accrual For Environmental Loss Contingencies Environmental reserve Accrued Liabilities Current Accrued liabilities Accumulated Defined Benefit Plans Adjustment [Member] Accumulated Defined Benefit Plans Adjustment Accumulated Net Gain Loss From Designated Or Qualifying Cash Flow Hedges [Member] Accumulated Net Gain (Loss) From Designated Or Qualifying Cash Flow Hedges Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax Unrealized loss Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax Unfunded employee benefit obligations Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income Loss Net Of Tax Balance at Sept 30, 2013 Balance at December 31, 2012 Total accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract] Accumulated other comprehensive loss, net of tax: Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Additional Paid In Capital Common Stock Additional paid in capital Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: After Amendment [Member] After Amendment [Member] After Amendment Allocated Share Based Compensation Expense Impact on income before income taxes Allocated Share Based Compensation Expense Net Of Tax Impact on net income A valuation allowance for trade and other receivables due to an entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible, and a reserve for estimated customer returns, allowances and earned discounts. Allowance For Doubtful Accounts Receivable And Reserve For Customer Deductions Current Allowance for doubtful accounts and customer deductions Represents the net income impact from the alternative energy tax credits. Alternative Energy Tax Credits Alternative energy tax credits Represents the cellulosic biofuel producer credits before any reserves for uncertain tax positions. Alternative Energy Tax Credits Before Reserves For Uncertain Tax Positions Cellulosic biofuel producer credits Alternative Energy Tax Credits [Line Items] Alternative Energy Tax Credits [Line Items] Alternative Energy Tax Credits [Line Items] Alternative Energy Tax Credits Alternative Energy Tax Credits [Member] Alternative Energy Tax Credits Alternative Energy Tax Credits Alternative Energy Tax Credits [Table] Alternative Energy Tax Credits [Table] Provides disclosures pertaining to the alternative fuel mixture and cellulosic biofuel producer tax credits. Alternative Energy Tax Credits [Text Block] Alternative Energy Tax Credits Represents the net change in the amount of alternative fuel mixture credits due the entity for the production and use of alternative fuels in the entity's trade or business. Alternative Fuel Mixture Credit Change Alternative fuel mixture credits The total amount of tax credits earned for the production and use of alternative fuels in an entity's trade or business. Alternative Fuel Mixture Credits Alternative energy tax credits Alternative fuel mixture credits Alternative Fuel Mixture Credits Alternative Fuel Mixture Credits [Member] Alternative Fuel Mixture Credits Amended Two Thousand Nine Federal Return Amended Two Thousand Nine Federal Return [Member] Amended Two Thousand Nine Federal Return Amendment [Axis] Amendment [Axis] Amendment [Axis] Amendment [Domain] Amendment [Domain] Amendment [Domain] Amendment Flag Amendment Flag Amortization Of Deferred Hedge Gains Amortization of net loss on treasury lock Amortization Of Financing Costs Amortization of financing costs Assets Total assets Assets [Abstract] ASSETS Assets And Associated Liabilities Of Transfers Accounted For As Secured Borrowings [Line Items] Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] Assets Current Total current assets Assets Current [Abstract] Current assets: Award Type [Axis] Award Type [Axis] Basis Of Accounting Basis of Presentation Boise Incorporation [Member] Boise Incorporation [Member] Boise Incorporation Business Acquisition Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition Cost Of Acquired Entity Transaction Costs Business acquisition, transaction cost Business Acquisition [Line Items] Business Acquisition [Line Items] Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount Purchase price allocation to goodwill deductible for tax purposes Business Acquisition Revenue Reported By Acquired Entity For Last Annual Period Net sales reported by acquired entity for last fiscal year Business Combination Consideration Transferred 1 Business acquisition, cost of acquired entity Business Combination Consideration Transferred Liabilities Incurred New borrowings Business Combination Disclosure [Text Block] Acquisition Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Other Than Goodwill Purchase price allocation to intangible assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Long Term Debt Business acquisition, outstanding indebtedness Business Combinations [Abstract] Business Combinations [Abstract] Represents the tender offer per share amount in a business acquisition. Business Combinations Acquired Outstanding Shares Tender Offer Per Share Amount Business acquisition common shares outstanding, per share Represents the total value of the acquisition, including any long-term debt assumed. Business Combination Transaction Value Business combination, transaction value Capital Lease Obligations Current Capital lease obligations Capital Lease Obligations Noncurrent Capital lease obligations Cash And Cash Equivalents At Carrying Value Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and cash equivalents Cash And Cash Equivalents Fair Value Disclosure Cash Cash And Cash Equivalents [Member] Cash and Cash Equivalents Cash And Cash Equivalents Period Increase Decrease Net increase (decrease) in cash and cash equivalents Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months Net amount of settlement gains (losses) on derivative instruments included in accumulated OCI to be amortized over next 12 months, before tax The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months, net of tax. Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months Net Of Tax Net amount of settlement gains (losses) on derivative instruments included in accumulated OCI to be amortized over next 12 months, after tax Cellulosic Biofuel Tax Credits Cellulosic Biofuel Tax Credits [Member] Cellulosic Biofuel Tax Credits Carrying amount as of the balance sheet date of the amount recognized for uncertain tax positions related to the cellulosic biofuel tax credit. Cellulosic Biofuel Tax Reserve Cellulosic biofuel tax reserve Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Common Stock Dividends Per Share Declared Dividends declared per common share Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Value Common stock, par value $0.01 per share, 300,000,000 shares authorized, 98,073,901 and 98,142,782 shares issued as of September 30, 2013 and December 31, 2012, respectively Compensation And Retirement Disclosure [Abstract] Compensation and Retirement Disclosure [Abstract] Comprehensive Income Net Of Tax Comprehensive income Comprehensive Income Note [Text Block] Accumulated Other Comprehensive Income Concentration Risk Percentage 1 Percent of net sales threshold used to determine major customers Consolidation Policy [Text Block] Basis of Consolidation The aggregate total of general and administrative expenses for corporate departments that are not associated with the manufacture, sale or creation of a product or product line. Corporate Overhead Corporate overhead Represents the percentage increase in corrugated products volume. Corrugated Products Volume Percentage Increase Corrugated products volume percentage increase Cost Of Goods Sold Cost of sales Current Fiscal Year End Date Current Fiscal Year End Date Customer Relationships [Member] Customer Relationships Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument Interest Rate Stated Percentage Note interest rate Debt Instrument Name [Domain] Debt Instrument, Name [Domain] Debt Instrument Term Note maturity period Deferred Income Tax Expense Benefit Deferred income tax provision Deferred Tax Assets Net Current Deferred income taxes Deferred Tax Liabilities Noncurrent Deferred income taxes Defined Benefit Plan Amortization Of Gains Losses Amortization of actuarial gains / (losses) Net amortization of unrecognized amounts, Actuarial loss Defined Benefit Plan Amortization Of Prior Service Cost Credit Net amortization of unrecognized amounts, Prior service cost Amortization of prior service costs Defined Benefit Plan Benefit Obligation Period Increase Decrease Decrease in the benefit obligation Defined Benefit Plan Curtailments Curtailment loss Pre-tax pension curtailment charge Curtailment loss Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Expected Return On Plan Assets Expected return on assets Defined Benefit Plan Interest Cost Interest cost on accumulated benefit obligation Defined Benefit Plan Net Periodic Benefit Cost Net Benefit Costs Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans Disclosures Defined Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Defined Benefit Plan Service Cost Service cost for benefits earned during the year Defined Benefit Plans Estimated Future Employer Contributions In Current Fiscal Year Expected company contributions Depreciation Depletion And Amortization Depreciation, depletion and amortization Derivative By Nature [Axis] Derivative, by Nature [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Derivative Instrument Risk [Axis] Derivative Instrument [Axis] Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments And Hedging Activities Disclosure [Text Block] Derivative Instruments and Hedging Activities Derivative [Line Items] Derivative [Line Items] Derivative Name [Domain] Derivative, Name [Domain] Derivative [Table] Derivative [Table] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stock-Based Compensation Dividends Payable Current Dividends payable Document and Entity Information. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share [Abstract] Net income per common share: Earnings Per Share Basic Basic Basic income per common share Earnings Per Share Diluted Diluted Diluted income per common share Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Text Block] Earnings Per Share Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Unrecognized compensation cost related to nonvested awards granted under the equity incentive plan Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 Expected weighted-average period to recognize the cost of stock awards (in years) Employee Service Share Based Compensation Tax Benefit From Compensation Expense Income tax benefit Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Environmental Loss Contingency Disclosure [Text Block] Environmental Liabilities Total costs incurred arising from requirements to perform environmental remediation activities. Environmental Remediation Expense To Date Remediation costs Environmental Remediation Obligations [Abstract] Environmental Remediation Obligations [Abstract] Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] Excess Tax Benefit From Share Based Compensation Financing Activities Excess tax benefits from share-based awards Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy [Axis] Fair Value By Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Disclosure Item Amounts [Domain] Fair Value Measurement [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Inputs Level 1 [Member] Quoted prices in active markets for identical assets (Level 1) Fair Value Measurement Inputs Disclosure [Text Block] Fair Value Measurements Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value Measurements [Line Items] Fair Value Measurements [Line Items] Fair Value Measurements [Line Items] Fair Value Measurements [Table] Fair Value Measurements [Table] Fair Value Measurements [Table] F I F O Inventory Amount Inventories at FIFO or average cost Finite Lived Intangible Assets Accumulated Amortization Accumulated Amortization Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite Lived Intangible Assets Gross Gross Carrying Amount Finite Lived Intangible Assets Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite Lived Intangible Assets Net Other intangible assets, net Finite Lived Intangible Asset Useful Life Intangible asset, useful life, in years Weighted Average Remaining Life Foreign Exchange Contract [Member] Foreign Exchange Contract Four Point Five Zero Percent Senior Note [Member] Four Point Five Zero Percent Senior Note [Member] 4.50% notes Gain Loss On Sale Of Property Plant Equipment Loss on disposals of property, plant and equipment Gains Losses On Extinguishment Of Debt Senior notes, redemption premium Loss on early extinguishment of debt Goodwill Goodwill Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Gross Profit Gross profit Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income before taxes Income Statement [Abstract] Income Statement [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Taxes Receivable Federal and state income taxes receivable Income Tax Expense Benefit Provision for income taxes Provision for income taxes Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Accrued Liabilities Accrued liabilities Increase Decrease In Inventories Inventories Increase Decrease In Operating Assets [Abstract] (Increase) decrease in assets - Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities, excluding effects of acquisition: Increase Decrease In Operating Liabilities [Abstract] Increase (decrease) in liabilities - Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other current assets Incremental Common Shares Attributable To Share Based Payment Arrangements Stock options, unvested restricted stock and performance units Intangible Assets Disclosure [Text Block] Other Intangible Assets Interest Income Expense Nonoperating Net Interest expense, net Interest Payable Current Accrued interest Inventory Current [Table] Inventory, Current [Table] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] Inventories Inventory Finished Goods Finished goods Inventory L I F O Reserve Excess of FIFO or average cost over LIFO cost Inventory [Line Items] Inventory [Line Items] Inventory Net Inventories Inventories, net Inventory Raw Materials Raw materials Inventory Work In Process Work in process Legal Entity [Axis] Legal Entity [Axis] Legal Matters And Contingencies [Text Block] Legal Proceedings Legal Proceedings [Line Items] Legal Proceedings [Line Items] Legal Proceedings [Line Items] Legal Proceedings [Table] Legal Proceedings [Table] Legal Proceedings [Table] Liabilities And Stockholders Equity Total liabilities and stockholders' equity Liabilities And Stockholders Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities Current Total current liabilities Liabilities Current [Abstract] Current liabilities: Liabilities Noncurrent Total long-term liabilities Liabilities Noncurrent [Abstract] Long-term liabilities: Line Of Credit Facility Amount Outstanding Credit facility outstanding Line Of Credit Facility [Axis] Lender Name [Axis] Line Of Credit Facility Lender [Domain] Line of Credit Facility, Lender [Domain] Line Of Credit Facility Maximum Borrowing Capacity Credit facility borrowing capacity Line Of Credit [Member] Line of Credit Long Term Debt Long-term debt, carrying value Long Term Debt Current Current maturities of long-term debt Long Term Debt Fair Value Long-term debt, fair value Long Term Debt Noncurrent Long-term debt Longterm Debt Type [Axis] Long-term Debt, Type [Axis] Longterm Debt Type [Domain] Long-term Debt, Type [Domain] The date when the equity incentive plan was amended, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year). Long Term Equity Incentive Plan Amendment Date Long-term equity incentive plan, amendment date The number of years the long term equity incentive plan termination date was extended. Long Term Equity Incentive Plan Extended Term Long-term equity incentive plan, term The date when the equity incentive plan expires, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year). Long Term Equity Incentive Plan Termination Date Long-term equity incentive plan, termination date Number of claims outstanding at the end of the accounting period. Loss Contingency Number Of Claims Number of lawsuits filed by the plaintiffs Loss Contingency Parties Jointly And Severally Liable In Litigation Number of other U.S. and Canadian containerboard producers Represents the mill production capacity. Mill Production Capacity Estimated production capacity Represents the fair value of money market funds as of the balance sheet date. Money Market Funds At Fair Value Money market funds Net Cash Provided By Used In Financing Activities Net cash used for financing activities Net Cash Provided By Used In Financing Activities [Abstract] Cash Flows from Financing Activities: Net Cash Provided By Used In Investing Activities Net cash used for investing activities Net Cash Provided By Used In Investing Activities [Abstract] Cash Flows from Investing Activities: Net Cash Provided By Used In Operating Activities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities [Abstract] Cash Flows from Operating Activities: Net Income Loss Net income Net income New Accounting Pronouncements Policy Policy [Text Block] Recent Accounting Pronouncements Represents number of joint ventures accounted for under the equity method. Number Of Joint Ventures Under Equity Method Number of joint ventures under equity method Operating Income Loss Income from operations Other Assets Noncurrent Other long-term assets Other Comprehensive Income Loss Before Reclassifications Net Of Tax Other comprehensive income before reclassifications Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax Decrease in accumulated other comprehensive income (loss) Unfunded employee benefit obligations Other Comprehensive Income Loss Net Of Tax Net current period other comprehensive income Other comprehensive income Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Other comprehensive income (loss), net of tax: Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax Deferred taxes Other Comprehensive Income Loss Reclassification Adjustment From A O C I On Derivatives Net Of Tax Reclassification adjustment for cash flow hedges included in net income Other Comprehensive Income Loss Reclassification Adjustment From A O C I Pension And Other Postretirement Benefit Plans Net Of Tax Amortization of pension and postretirement plans actuarial loss and prior service cost Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax Fair value adjustments to cash flow hedges Other Intangible Assets [Member] Other Intangible Assets Other Inventory Supplies Supplies and materials Other Liabilities Noncurrent Other long-term liabilities Other Operating Activities Cash Flow Statement Other, net Other Operating Income Expense Net Other expense, net Other Postretirement Benefit Plans Defined Benefit [Member] Postretirement Plans Packaging Specialists Packaging Specialists [Member] Packaging Specialists Payments For Proceeds From Hedge Financing Activities Proceeds from or (payments to) settlement of interest rate protection agreement Settlement of treasury lock Payments For Repurchase Of Common Stock Repurchases of common stock Payments Of Dividends Common Stock Common stock dividends paid Payments Of Financing Costs Financing costs paid Payments Related To Tax Withholding For Share Based Compensation Shares withheld to cover employee restricted stock taxes Payments To Acquire Businesses Net Of Cash Acquired Acquisition of business Payments To Acquire Other Productive Assets Additions to other long term assets Payments To Acquire Property Plant And Equipment Additions to property, plant and equipment Pension And Other Postretirement Benefits Disclosure [Text Block] Employee Benefit Plans and Other Postretirement Plans Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent Pension and postretirement benefit plans The amount of pension and postretirement benefit costs recognized during the period, less the amount of contributions made by the entity to fund its plans. For defined benefit plans, pension and postretirement expense includes the following components: service cost, interest cost, expected return on plan assets, gain or loss on plan assets, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments. Pension And Postretirement Benefits Contributions Expense Net Pension and postretirement benefits Pension Plans Defined Benefit [Member] Pension Plans Performance Shares [Member] Performance Shares Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Represents proceeds received from government grant. Proceeds From Government Grant Treasury grant proceeds Proceeds From Issuance Of Long Term Debt Proceeds on long-term debt Proceeds From Sale Of Property Plant And Equipment Proceeds from disposals of property, plant and equipment Proceeds From Stock Options Exercised Proceeds from exercise of stock options Property Plant And Equipment Net Property, plant and equipment, net Receivables Credit Facility Receivables Credit Facility [Member] Receivables Credit Facility Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax Amounts reclassified from AOCI Reclassification Out Of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification Out Of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification Out Of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income Reclassification Out Of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification Out Of Accumulated Other Comprehensive Income Table [Text Block] Reclassification Adjustments Out of AOCI Repayments Of Long Term Debt And Capital Securities Payments on long-term debt Restricted Stock [Member] Restricted Stock Retained Earnings Accumulated Deficit Retained earnings Revenue Recognition Policy [Text Block] Revenue Recognition Sales Revenue Net Net sales Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block] Components of Changes in Accumulated Other Comprehensive Income ("AOCI") Schedule Of Assets And Associated Liabilities Accounted For As Secured Borrowings [Table] Schedule of Assets and Associated Liabilities Accounted for as Secured Borrowings [Table] Schedule Of Business Acquisitions By Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Schedule Of Compensation Cost For Share Based Payment Arrangements Allocation Of Share Based Compensation Costs By Plan Table [Text Block] Compensation Expense for Restricted Stock Recognized in Condensed Consolidated Statements of Income Schedule Of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Computation of Basic and Diluted Income Per Common Share Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule Of Finite Lived Intangible Assets Table [Text Block] Components of Other Intangible Assets Schedule Of Goodwill And Intangible Assets [Line Items] Schedule Of Goodwill And Intangible Assets [Line Items] Schedule Of Goodwill And Intangible Assets [Line Items] Schedule Of Goodwill And Intangible Assets [Table] Schedule Of Goodwill And Intangible Assets [Table] Schedule Of Goodwill And Intangible Assets [Table] Schedule Of Inventory Current Table [Text Block] Components of Inventories Schedule Of Net Benefit Costs Table [Text Block] Components of Net Periodic Benefit Cost Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] Summary of Restricted Stock Activity Segment Reporting Policy Policy [Text Block] Segment Information Selling General And Administrative Expense Selling and administrative expenses Share Based Compensation Share-based compensation expense Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period 1 Vesting period of equity awards granted to employees, years Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Restricted stock, Shares, Cancellations The grant date fair value of nonvested equity-based payment instruments excluding stock (or unit) options, that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Grant Date Fair Value Restricted stock, Cancellations, Fair Market Value at Date of Grant The grant date fair value of nonvested equity based payment instruments, excluding stock (or unit) options, that were granted during the period. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period Grant Date Fair Value Restricted stock, Granted, Fair Market Value at Date of Grant Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Performance units, Granted Restricted stock, Shares,Granted The grant date fair value of nonvested equity based payment instruments, excluding stock (or unit) options, that were granted during the period. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Grant Date Fair Value Granted The grant date fair value of nonvested equity-based payment instruments excluding stock (or unit) options, for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Grant Date Fair Value Ending Balance Beginning Balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Ending Balance Beginning Balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Restricted stock, Shares, Vested The grant date fair value of nonvested equity-based payment instruments excluding stock (or unit) options, for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Grant Date Fair Value Restricted stock, Vested, Fair Market Value at Date of Grant Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized Number of additional shares authorized for grant Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Number of shares authorized under plan Options, restricted stock and performance units granted since inception of the plan, net of forfeitures. Share Based Compensation Arrangement By Share Based Payment Award Shares Granted Since Inception Of Plan Net Of Forfeitures Share based awards Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Equity Award [Domain] Share Based Compensation Performance Shares Award Outstanding Activity Table [Text Block] Summary of Performance Unit Activity Share Repurchase Program [Table] Share Repurchase Program [Table] Share Repurchase Program [Table] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Text Block] Summary of Accounting Policies Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Estimated Range Of Change Lower Bound Change in reserve for unrecognized tax benefit, minimum Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Estimated Range Of Change Upper Bound Change in reserve for unrecognized tax benefit, maximum Site Contingency [Line Items] Site Contingency [Line Items] Site Contingency [Table] Site Contingency [Table] Statement Equity Components [Axis] Equity Components [Axis] Statement [Line Items] Statement [Line Items] Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Stockholders Equity Total stockholders' equity Stockholders Equity [Abstract] Stockholders' equity: Stock Repurchased And Retired During Period Shares Common stock repurchased, shares Stock Repurchased And Retired During Period Value Common stock repurchased, value Stock Repurchase Program Authorized Amount Common stock repurchase authorized amount Stock Repurchase Program [Line Items] Stock Repurchase Program [Line Items] Stock Repurchase Program [Line Items] Stock Repurchase Program Remaining Authorized Repurchase Amount Common stock repurchase authorization amount available Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Event [Member] Subsequent Event Subsequent Events [Abstract] Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Tax Credit Carryforward Amount Tax credits used to offset future cash tax payment Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Tax Credit Carryforward Name [Domain] Tax Credit Carryforward, Name [Domain] Represents tax credit per gallon of alternative fuel produced. Tax Credit Per Gallon Refundable tax credit per gallon Term LoanA Facility [Member] Term Loana Facility [Member] Term LoanA Facility Text Block [Abstract] Text Block [Abstract] Trading Symbol Trading Symbol Transfers And Servicing [Abstract] Transfers and Servicing [Abstract] Transfers And Servicing Of Financial Assets [Text Block] Transfers of Financial Assets Treasury Lock [Member] Treasury Lock Treasury Stock Acquired Average Cost Per Share Common stock repurchase price per share Treasury Stock [Text Block] Stock Repurchase Program Two Thousand And Eight Interest Rate Protection Agreement Two Thousand And Eight Interest Rate Protection Agreement [Member] 2008 Interest Rate Protection Agreement Two Thousand And Eleven Interest Rate Protection Agreement [Member] Two Thousand And Eleven Interest Rate Protection Agreement [Member] 2011 Interest Rate Protection Agreement Two Thousand And Ten Interest Rate Protection Agreement Two Thousand And Ten Interest Rate Protection Agreement [Member] 2010 Interest Rate Protection Agreement Uncategorized [Abstract] Uncategorized [Abstract] Uncategorized [Abstract] Unrecognized Tax Benefits Uncertain tax positions Use Of Estimates Use of Estimates U.S. Treasury Note, Maturity Term U S Treasury Note Maturity Term U.S. Treasury Note, maturity term (in years) Weighted Average Number Of Diluted Shares Outstanding Diluted Diluted common shares outstanding Weighted Average Number Of Shares Outstanding [Abstract] Weighted average common shares outstanding: Weighted Average Number Of Shares Outstanding Basic Basic Basic common shares outstanding