Commitments and Contingencies Disclosure [Abstract] Contingent Liabilities and Commitments Commitments and Contingencies Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events [Text Block] Investments, Debt and Equity Securities [Abstract] Investments Investment [Text Block] Inventory Disclosure [Abstract] Schedule of Inventory, Current [Table Text Block] Schedule of Inventory, Current [Table Text Block] Schedule of Repurchase Agreements [Table Text Block] Schedule of Repurchase Agreements [Table Text Block] Product Warranties Disclosures [Abstract] Product Liability Contingency [Table] Product Liability Contingency [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Class A, B, and C Motorhomes [Member] Class A And B And C Motorhomes [Member] Class A B C Motorhomes [Member] Class A and C Sidewalls and Floors [Member] Class A And C Sidewalls and Floors [Member] Class A and C Sidewalls and Floors [Member] Towable Products [Member] Towable Products [Member] Towable Products [Member] Product Liability Contingency [Line Items] Product Liability Contingency [Line Items] Warranty term Product Warranty Accrual, Warranty Term Product Warranty Accrual, Warranty Term Warranty distance (in miles) Product Warranty Accrual, Warranty Distance Product Warranty Accrual, Warranty Distance Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statement of Cash Flows [Abstract] Statement [Table] Statement [Table] Statement, Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization LIFO expense Inventory, LIFO Reserve, Period Charge Stock-based compensation Share-based Compensation Deferred income taxes including valuation allowance Deferred Income Tax Expense (Benefit) Postretirement benefit income and deferred compensation expense Increase (Decrease) in Deferred Compensation and Postretirement Obligation Expenses The increase (decrease) during the reporting period in the amount due to fund non-pension benefits provided to former and retired employees and the increase (decrease) in the obligation created by employee agreements whereby earned compensation will be paid in the future. Provision for doubtful accounts Provision for Doubtful Accounts (Gain) loss on disposal of property Gain (Loss) on Disposition of Assets Gain on life insurance Gain on life insurance This item represents the gain (loss) realized during the period on proceeds of life insurance policies for which the entity is the beneficiary. Other Other Operating Activities, Cash Flow Statement Increase in cash surrender value of life insurance policies Life Insurance, Corporate or Bank Owned, Change in Value Change in assets and liabilities: Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] Inventories Increase (Decrease) in Inventories Receivables, prepaid and other assets Increase (Decrease) in Receivables and Prepaid Assets The increase (decrease) during the reporting period in the total amount due within one year from all parties, associated with underlying transactions that are classified as operating activities; and the increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets,or income taxes. Income taxes and unrecognized tax benefits Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Postretirement and deferred compensation benefits Increase (Decrease) in Postretirement Obligations Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from the sale of investments, at par Proceeds from Sale of Available-for-sale Securities Proceeds from life insurance Proceeds from Life Insurance Policies Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from the sale of property Proceeds from the Sale of Property The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale and from the sale of formerly productive assets held for sale. Payments of COLI borrowings Payments of COLI Borrowings The net cash outflow for payments on borrowings from company-life insurance policies for which the entity is the beneficiary. Other Payments for (Proceeds from) Other Investing Activities Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Payments for purchases of common stock Payments for Repurchase of Common Stock Other Proceeds from (Payments for) Other Financing Activities Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Supplemental cash flow disclosure: Supplemental Cash Flow Information [Abstract] Income taxes paid Income Taxes Paid, Net Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Statement of Financial Position [Abstract] Receivables, less allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Capital stock common, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Capital stock common, shares authorized (in shares) Common Stock, Shares Authorized Capital stock common, shares issued (in shares) Common Stock, Shares, Issued Treasury stock, at cost, shares (in shares) Treasury Stock, Shares Compensation and Retirement Disclosure [Abstract] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] Postretirement health care benefit cost Postretirement health care benefit cost This represents the entire liability recognized in the balance sheet that is associated with the postretirement health care benefits. Non-qualified deferred compensation Non-qualified deferred compensation This represents the entire liability recognized in the balance sheet that is associated with the non-qualified deferred compensation plan. Executive share option plan liability Executive share option plan liability This represents the entire liability recognized in the balance sheet that is associated with the executive share option plans. SERP benefit liability SERP benefit liability This represents the entire liability recognized in the balance sheet that is associated with the SERP benefit plan. Executive deferred compensation Executive deferred compensation This represents the entire liability recognized in the balance sheet that is associated with the executive deferred compensation plan. Officer stock-based compensation Due to Officers or Stockholders, Noncurrent Total postretirement health care and deferred compensation benefits Pension and Other Postretirement Defined Benefit Plans, Liabilities Less current portion Pension and Other Postretirement and Postemployment Benefit Plans, Liabilities, Current Long-term postretirement health care and deferred compensation benefits Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent Fair Value Disclosures [Abstract] Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Asset Class [Axis] Asset Class [Axis] Fair Value by Asset Class [Domain] Fair Value by Asset Class [Domain] Auction Rate Securities [Member] Auction Rate Securities [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Discounted Cash Flow Technique [Member] Discounted Cash Flow Technique [Member] Discounted Cash Flow Technique [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Student loan ARS Loans Held-for-sale, Consumer, Installment, Student Projected ARS yield Fair Value Inputs, Projected Yield Rate Fair Value Inputs, Projected Yield Rate Discount for lack of marketability Fair Value Inputs, Discount for Lack of Marketability Postretirement health care benefits age requirement before distribution occurs Defined Benefit Plan, Age Requirement Before Distribution Occurs Defined Benefit Plan, Age Requirement Before Distribution Occurs Postretirement health care benefits continuous service requirement Defined Benefit Plan, Service Requirement Defined Benefit Plan, Service Requirement Dollar cap liability reduction Defined Benefit Plan, Dollar Cap Liability Reduction Defined Benefit Plan, Dollar Cap Liability Reduction Plan amendment liability reduction Defined Benefit Plan, Plan Amendments Plan amendment amortization period Defined Benefit Plan, Amendment Amortization Period The number of years that the Jan 2013 postretirement health care plan amendment will be amortized. Finished goods Inventory, Finished Goods, Gross Work-in-process Inventory, Work in Process, Gross Raw materials Inventory, Raw Materials, Net of Reserves Total Inventory, Gross LIFO reserve Inventory, LIFO Reserve Total inventories Inventory, Net Goodwill and Intangible Assets Disclosure [Abstract] Goodwill amortizable for tax return purposes only Goodwill Amortizable for Tax Return Purposes Only Goodwill Amortizable for Tax Return Purposes Only Weighted average remaining amortization period Finite-Lived Intangible Asset, Useful Life Warranty Product Warranty Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Employee and Retiree Benefits Pension and Other Postretirement Benefits Disclosure [Text Block] Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Earnings Per Share Earnings Per Share [Text Block] Inventories Inventory Disclosure [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance at beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Transfer to Level 2 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Net change included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Balance at end of period Goodwill and Amortizable Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Inventory, gross Inventory, LIFO LIFO Inventory Amount Inventory, FIFO (Towables) FIFO Inventory Amount Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Impairment of long-lived assets to be disposed of Impairment of Long-Lived Assets to be Disposed of Property, Plant and Equipment [Abstract] Property, Plant and Equipment and Assets Held for Sale Property, Plant and Equipment Disclosure [Text Block] Interest cost Defined Benefit Plan, Interest Cost Service cost Defined Benefit Plan, Service Cost Amortization of prior service benfit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amortization of net actuarial loss Defined Benefit Plan, Amortization of Gains (Losses) Net periodic postretirement benefit income Defined Benefit Plan, Net Periodic Benefit Cost Payments for postretirement health care Defined Benefit Plan, Benefits Paid 2014 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Five Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Short-term investments Short-term Investments Receivables, less allowance for doubtful accounts ($178 and $175) Accounts Receivable, Net, Current Inventories Prepaid expenses and other assets Prepaid Expense and Other Assets, Current Income taxes receivable Income Taxes Receivable, Current Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Assets held for sale Assets Held-for-sale, Property, Plant and Equipment Long-term investments Auction Rate Securities, Noncurrent Investment in life insurance Life Insurance, Corporate or Bank Owned, Amount Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Goodwill Goodwill Amortizable intangible assets Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets, Noncurrent Total assets Assets Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Income taxes payable Accrued Income Taxes, Current Accrued expenses: Accrued Liabilities, Current [Abstract] Accrued compensation Employee-related Liabilities, Current Product warranties Product Warranty Accrual, Current Self-insurance Self Insurance Reserve, Current Accrued loss on repurchases Accrued Loss on Repurchases Estimated loss reserve for purchases of products previously sold. Promotional Accrued Marketing Costs, Current Other Accrued Liabilities, Current Total current liabilities Liabilities, Current Total long-term liabilities: Liabilities, Noncurrent [Abstract] Unrecognized tax benefits Liability for Uncertain Tax Positions, Noncurrent Postretirement health care and deferred compensations benefits Total long-term liabilities Liabilities, Noncurrent Contingent liabilities and commitments Commitments and Contingencies Stockholders' equity: Equity [Abstract] Capital stock common, par value $0.50; authorized 60,000 shares, issued 51,776 shares Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost (23,676 and 23,122 shares) Treasury Stock, Value Total stockholders' equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders' equity Liabilities and Equity Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Date [Axis] Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] [Domain] for Award Date [Axis] October 10, 2012 Grant [Member] October 10, 2012 Grant [Member] October 10, 2012 Grant [Member] Title of Individual [Axis] Title of Individual [Axis] Title of Individual with Relationship to Entity [Domain] Title of Individual with Relationship to Entity [Domain] Management [Member] Management [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted Stock [Member] Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Issuance of stock (in shares) Stock Issued During Period, Shares, Share-based Compensation, Gross Stock-based compensation expense Allocated Share-based Compensation Expense Fiscal Period [Policy Text Block] Fiscal Period, Policy [Policy Text Block] New Accounting Pronouncements [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Inventory repurchased, units (in recreation vehicles) Number of units repurchased The number of units repurchased from dealers in the period. Inventory repurchased, dollars Value of units repurchased The value of inventory repurchased from dealers in the period. Inventory resold, units (in recreation vehicles) Number of repurchased units resold The number of repurchased units resold during the period. Inventory resold, cash collected Cash collected for resold repurchased units Cash collected for resold repurchased inventory during the period. Inventory resold, loss recognized Loss recognized on resold repurchased units Loss recognized on resold repurchased inventory during the period. Units in ending inventory (in recreation vehicles) Repurchased units in inventory The number of repurchased units in inventory as of the period ending date. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options [Member] Stock Options [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive shares average price (in dollars per share) Antidilutive Securities Excluded from Computation of Earnings Per Share, Per Share Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Per Share Amount Risks and Uncertainties [Abstract] Concentration Risk [Table] Concentration Risk [Table] Major Customers [Axis] Major Customers [Axis] Name of Major Customer [Domain] Name of Major Customer [Domain] FreedomRoads, LLC [Member] FreedomRoads, LLC [Member] FreedomRoads, LLC [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Sales Revenue, Goods, Net [Member] Sales Revenue, Goods, Net [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk [Member] Customer Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Percent of revenue Concentration Risk, Percentage Property, Plant and Equipment, Net [Abstract] Schedule of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land [Member] Land [Member] Buildings and building improvements [Member] Building and Building Improvements [Member] Machinery and equipment [Member] Machinery and Equipment [Member] Transportation [Member] Transportation Equipment [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Total property, plant and equipment, gross Property, Plant and Equipment, Gross Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total property, plant and equipment, net Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Basic Net income per share - basic (in dollars per share) Earnings Per Share, Basic Dilutive impact of awards and options outstanding Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average shares and potential dilutive shares outstanding Weighted Average Number of Shares Outstanding, Diluted Net income per share - assuming dilution (in dollars per share) Earnings Per Share, Diluted Debt Disclosure [Abstract] Initial borrowing capacity Line of Credit Facility, Current Borrowing Capacity Minimum excess borrowing availability with no financial covenant restrictions Line of Credit Facility, Minimum Excess Borrowing Availability With No Financial Covenant Restrictions Line of Credit Facility, Minimum Excess Borrowing Availability With No Financial Covenant Restrictions Maximum company stock repurchases with no financial covenant restrictions Line of Credit Facility, Maximum Amount of Repurchased Company Stock Within Twelve Months With No Financial Covenant Restrictions Line of Credit Facility, Maximum Amount of Repurchased Company Stock Within Twelve Months With No Financial Covenant Restrictions Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Basis spread on interest rate Debt Instrument, Basis Spread on Variable Rate Unused line fee Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Fair Value, Assets Measured on Recurring Basis [Table Text Block] Fair Value, Assets Measured on Recurring Basis [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Schedule of Product Warranty Liability [Table Text Block] Schedule of Product Warranty Liability [Table Text Block] Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Balance at beginning of period Product Warranty Accrual Provision Product Warranty Accrual, Warranties Issued Claims paid Product Warranty Accrual, Payments Balance at end of period Deferred tax assets, valuation allowance Deferred Tax Assets, Valuation Allowance Unrecognized tax benefits Unrecognized Tax Benefits Unrecognized tax benefits that would have an impact on effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Unrecognized tax benefits, income tax penalties and interest accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Credit Facilities Debt Disclosure [Text Block] Assets Held-for-sale, Long Lived [Abstract] Schedule of Long Lived Assets Held-for-sale [Table] Schedule of Long Lived Assets Held-for-sale [Table] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale, Name [Domain] Long Lived Assets Held-for-sale, Name [Domain] Hampton Facility [Member] Hampton Facility [Member] Hampton Facility [Member] Long Lived Assets Held-for-sale [Line Items] Long Lived Assets Held-for-sale [Line Items] Gross proceeds from sale Long Lived Assets Held-for-sale, Proceeds from Sale Selling costs Long Lived Assets Held-for-sale, Selling Costs Long Lived Assets Held-for-sale, Selling Costs Loss on sale Long Lived Assets Held-for-sale, Gain (Loss) on Sale Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Dealer network [Member] Customer Lists [Member] Trademarks [Member] Trademarks [Member] Non-compete agreement [Member] Noncompete Agreements [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Cost Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Student loan ARS with pending redemption Loans Held-for-sale, Consumer, Installment, Student, Current Loans Held-for-sale, Consumer, Installment, Student, Current Domestic equity funds Domestic Equity Funds Assets that fund deferred compensation consisting of domestic equity funds. International equity funds International Equity Funds Assets that fund deferred compensation consisting of international equity funds. Fixed income funds Fixed Income Funds Assets that fund deferred compensation consisting of fixed income funds. Total assets at fair value Assets, Fair Value Disclosure Purchase Commitment, Excluding Long-term Commitment [Table] Purchase Commitment, Excluding Long-term Commitment [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Obligation to Repurchase from Dealers [Member] Obligation to Repurchase from Dealers [Member] Obligation to Repurchase from Dealers [Member] State Obligation to Repurchase [Member] State Obligation to Repurchase [Member] State Obligation to Repurchase [Member] Purchase Commitment, Excluding Long-term Commitment [Line Items] Purchase Commitment, Excluding Long-term Commitment [Line Items] Repurchase agreement term Loss Contingency, Repurchase Agreement Term Loss Contingency, Repurchase Agreement Term Contingent liability on repurchase agreements Loss Contingency, Estimate of Possible Loss Hypothetical percent change of repurchase assumptions Hypothetical change of repurchase assumptions (percent) A hypothetical change (in percent) of repurchase assumptions. Hypothetical change on repurchase assumptions Hypothetical change on repurchase assumptions The estimated maximum amount of possible loss from the contingency. Statement of Other Comprehensive Income [Abstract] Amortization of prior service credit, tax Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Tax Amortization of net actuarial loss, tax Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized (Gain) Loss Arising During Period, Tax Unrealized depreciation of investments, tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Auction Rate Securities, Rate Setting Intervals [Axis] Auction Rate Securities, Rate Setting Intervals [Axis] Auction Rate Securities, Rate Setting Intervals [Axis] Auction Rate Securities, Rate Setting Intervals [Domain] Auction Rate Securities, Rate Setting Intervals [Domain] Auction Rate Securities, Rate Setting Intervals [Domain] Auction Rate Interval One [Member] Auction Rate Interval One [Member] Auction Rate Interval One [Member] Auction Rate Interval Two [Member] Auction Rate Interval Two [Member] Auction Rate Interval Two [Member] Auction Rate Interval Three [Member] Auction Rate Interval Three [Member] Auction Rate Interval Three [Member] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Available-for-sale securities Available-for-sale Securities Available-for-sale securities, noncurrent Available-for-sale Securities, Noncurrent Available-for-sale securities, current Available-for-sale Securities, Current Auction rate securities, rate setting interval Auction Rate Securities, Rate Setting Interval Auction Rate Securities, Rate Setting Interval Years of auction rate securities redemptions Available for Sale Securities, Years of Auction Rate Security Redemptions Available for Sale Securities, Years of Auction Rate Security Redemptions Available-for-sale securities, maturity term Available For Sale Securities, Maturity Term Available For Sale Securities, Maturity Term Temporary impairment Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Schedule of Net Benefit Costs [Table Text Block] Schedule of Net Benefit Costs [Table Text Block] Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment [Table Text Block] Income Statement [Abstract] Net revenues Revenue, Net Cost of goods sold Cost of Goods Sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Selling Selling and Marketing Expense General and administrative General and Administrative Expense Loss on sale of asset held for sale Gain (Loss) on Sale of Other Assets Total operating expenses Operating Expenses Operating income Operating Income (Loss) Non-operating income Other Nonoperating Income (Expense) Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision (benefit) for taxes Income Tax Expense (Benefit) Net income Income per common share: Basic Diluted Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Amortization of prior service credit (net of tax of $442 and $380) Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax Amortization of net actuarial loss (net of tax of $149 and $93) Accumulated Other Comprehensive Income Decrease (Increase) in Actuarial Loss The decrease (increase) in actuarial loss included in accumulated other comprehensive income associated with a postretirement health plan because it has yet to be recognized as components of net periodic benefit cost. Unrealized depreciation of investments (net of tax of $0 and $47) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Total other comprehensive loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Concentration Risk Disclosure [Text Block] Concentration Risk Disclosure [Text Block]