Net income Net income (loss) Net Income Loss Provision (benefit) for income taxes Provision for income taxes Operating income (loss) Operating income Operating income (loss) Raw material, freight and other costs Raw material, freight and other costs Selling and general expenses, excluding depreciation Selling and general expenses, excluding depreciation Refined products Refined products Other Other Total assets Total assets Total liabilities and shareholders' equity Total liabilities and shareholders' equity Total current assets Total current assets Property, plant and equipment, net Property, plant and equipment, net Trade receivables, net of allowance of $1,000 at 2010 and 2009, respectively Trade receivables, net of allowance of $1,000 and $500 at 2009 and 2008, respectively Other receivables Other receivables Deferred Tax Assets Net Current Deferred income tax assets - current Other current assets Other current assets Total current liabilities Total current liabilities Other long-term liabilities Other long-term liabilities Deferred income tax liabilities Deferred income taxes Paid-in capital Paid-in capital Retained earnings Retained earnings Accumulated other comprehensive loss Accumulated other comprehensive income Treasury stock, at cost, 26,893,939 and 24,164,808 shares at December 31, 2007 and 2006, respectively Treasury stock, at cost, 26,097,398 and 27,165,400 shares at 2010 and 2009, respectively Total shareholders' equity Total shareholders' equity Increase (decrease) in cash and cash equivalents (Decrease) increase in cash and cash equivalents Net cash used in investing activities Net cash used in investing activities Net cash used in financing activities Net cash (used in) provided by financing activities Depreciation Depletion And Amortization Depreciation, amortization and accretion Deferred Income Tax Expense Benefit Deferred income taxes Excess Tax Benefit From Share Based Compensation Operating Activities Excess income tax benefits of stock-based compensation Amortization of debt issuance costs Amortization of debt issuance costs Senior Notes discount amortization Senior Notes discount amortization Allowance for investment loss and bad debts (Decrease) increase in allowance for investment loss and bad debts (Decrease) increase in other long-term liabilities Increase in other long-term liabilities Changes in working capital from operations Changes in working capital from operations Additions to property, plant and equipment Additions to property, plant and equipment Proceeds from sales of assets Proceeds from sales of assets Proceeds from issuance of common stock Proceeds from issuance of common stock Excess income tax benefits of stock-based compensation Excess income tax benefits of stock-based compensation Revenues: Current assets: ASSETS Current liabilities: Commitments and contingencies Cash flows from operating activities: Cash flows from investing activities: Cash flows from financing activites: Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, including cash equivalents of $486,178 and $482,415 at 2009 and 2008, respectively Cash and cash equivalents Cash paid during the period for interest, excluding capitalized interest Cash paid during the period for income taxes Cash refunds of income taxes Noncash investing activities - accrued capital expenditures, end of period Noncash investing activities - accrued capital expenditures, end of period Defined benefit plans, net of tax Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease Deferred financing costs, net of accumulated amortization of $2,400 and $3,893 at 2010 and 2009, respectively Deferred financing costs, net of accumulated amortization Other assets Other assets Basic earnings (loss) per share of common stock Diluted earnings (loss) per share of common stock Preferred stock, $100 par value, 500,000 shares authorized, no shares issued Preferred stock - par value (in dollars per share) Preferred stock - shares authorized (in shares) Preferred stock - shares issued (in shares) Common stock - shares authorized (in shares) Common stock - shares issued (in shares) Treasury stock shares Income Statement [Abstract] Statement [Table] Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Finacial Position [Abstract] Notes to Financial Statements [Abstract] Cash equivalents Trade receivables allowance for doubtful accounts Statement, Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Paid-In-Capital Comprehensive Income [Member] Comprehensive Income Retained Earnings Retained Earnings [Member] Treasury Stock Treasury Stock [Member] Deferred Compensation Deferred Compensation, Share-based Payments [Member] Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income [Member] Statement of Stockholders' Equity [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-based Compensation Environmental Loss Contingency Disclosure [Text Block] Environmental Schedule of Loss Contingencies by Contingency [Text Block] Litigation Commitments Disclosure [Text Block] Amendment of Crude Oil Purchase and Sale Contract Proceeds from issuance of Senior Notes Supplemental Disclosure of Cash Flow Information Adjustments to reconcile net income to net cash from operating activities: Increase (Decrease) in Operating Capital [Abstract] Changes in components of working capital from operations: Increase (Decrease) in Inventories Decrease (increase) in inventory Decrease (increase) in other current assets Increase (decrease) in accounts payable Increase (decrease) in accrued liabilities Document Information [Text Block] Document Type Amendment Flag Amendment Description Document Period End Date Entity [Text Block] Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Deferred income tax assets - noncurrent Total revenues Total revenues Refinery operating expenses, excluding depreciation Net gains on sales of assets Net gains on sales of assets Total costs and expenses Total costs and expenses Interest expense and other financing costs Interest expense and other financing costs Interest and investment income Interest and investment income Income (loss) before income taxes Income (loss) before income taxes Comprehensive income (loss) Intangible assets - accumulated amortization Deferred financing costs - accumulated amortization Inventory of crude oil, products and other Deferred turnaround and catalyst costs, net Intangible assets, net of accumulated amortization of $736 and $614 at 2010 and 2009, respectively LIABILITIES AND SHAREHOLDERS' EQUITY Accounts payable Accrued liabilities and other Long-term debt Contingent income tax liabilities Post-retirement employee liabilities Long-term capital lease obligation Shareholders' equity: Common stock, no par value, 180,000,000 shares authorized, 131,850,356 shares issued at both periods Stock-based compensation expense Share Based Compensation Decrease (increase) in trade, income taxes and other receivables Payments For Proceeds From Other Investing Activities Other Purchase of treasury stock Purchase of treasury stock Dividends paid Dividends paid Debt issuance costs and other Debt issuance costs and other Common stock - no par value (in dollars per share) Costs and expenses: Net cash provided by operating activities Net cash provided by operating activities Common Stock (in shares) Balance (in shares) Balance (in shares) Balance, Value Balance Balance Stock-based compensation expense Stock Issued During Period, Value, Share-based Compensation Shares issued under stock-based compensation plans Stock Issued During Period, Shares, Share-based Compensation (in shares) Shares issued under stock-based compensation plans (in shares) Treasury Stock, Shares, Acquired (in shares) Stock repurchase plan (in shares) Stock repurchase plan Treasury Stock Value Acquired Cost Method Income tax benefits of stock-based compensation, net of contingency Adjustments to Additional Paid in Capital, Tax Effect from Share-based Compensation Financial Statement Presentation Other Receivables Other Current Assets Accrued Liabilities and Other Long-term Debt Income Taxes Employee Benefit Plans Fair Value Measurement Price Risk Management Activities Inventories Condensed Financial Statements Other comprehensive loss from tax effect on defined benefit plans Tax effects of the initial adoption of Statement of Financial Accounting Standards 158 (FAS No. 158), Employers' Accounting for Defined Benefit Pension and Other Postretirement Plan Adjustment To Initially Apply Financial Principle Tax Adjustment to initially apply FAS No. 158, tax Income taxes receivable Depreciation Amortization And Accretion Net Depreciation, amortization and accretion Property, Plant and Equipment Other Long Term Liabilities Stockholders Equity Note Disclosure TextBlock Common Stock Schedule Of Line Of Credit Facilities TextBlock Revolving Credit Facility Commitments And Contingencies Disclosure TextBlock Commitments and Contingencies Quarterly Financia Information TextBlock Selected Quarterly Financial and Operating Data (Unaudited) Nature Of Operations 1. Nature Of Operations Significant Accounting Policies TextBlock Significant Accounting Policies Repayments Of Senior Debt Repayments of Senior Notes Gains Losses On Extinguishment Of Debt Loss on extinguishment of debt Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities Other Other Dividends Common Stock Cash Dividends declared Shares Received [Abstract] Shares received under: Comprehensive income: Other Comprehenive Income [Abstract] Other comprehensive income (loss): Other comprehensive income (loss) Comprehensive income (loss): Shares Received Under Stock Based Compensation Plans Stock-based compensation plans (in shares) Number of shares that have been repurchased during the period and are being held in treasury under the stock-based compensation plan for paying income taxes. Shares Received Under Stock Based Compensation Plans Value Stock-based compensation plans Cost of common stock that were repurchased during the period under the stock-based compensation plan for paying income taxes. Recorded using the cost method. Schedule Of Subsequent Events Text Block Subsequent Events Increase Decrease In Deferred Charges Turnaround and catalyst costs paid