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Unallocated Corporate Expenses Foreign Plan [Member] Retirement Plan Sponsor Location [Axis] Polymers [Member] Polymers [Member] Polymers. Polymers [Member] Total inventories Inventories (Note 6) Inventory, Net Cash payments of interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statistical Measurement Statistical Measurement [Domain] CIC Credit Agreement [Member] CIC credit agreement. CIC Credit Agreement [Member] Total current assets Assets, Current Compensation expense Share-Based Payment Arrangement, Expense Site Contingency [Line Items] Site Contingency [Line Items] Document Period End Date Document Period End Date Document Period End Date Other Income and Expenses [Abstract] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Total defined contribution plan expenses Defined Contribution Plan, Cost Total defined contribution expense Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Weighted average amortization periods of identifiable intangibles assets Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Statement of Financial Position [Abstract] Defined Benefit Plan, Funding Status Defined Benefit Plan, Funding Status [Axis] Restructuring, Impairment, and Other Activities Disclosure [Text Block] Business Restructuring Environmental Remediation Site Environmental Remediation Site [Axis] Amounts Reclassified From Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Environmental losses and legal losses Loss Contingency, Estimate of Possible Loss Supplemental cash flow elements. Supplemental Cash Flow Elements [Line Items] Supplemental Cash Flow Elements [Line Items] Restructuring Reserve, Accrual Adjustment Expenses accrued during the period Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Lessee, Operating Lease, Liability, to be Paid, Year Two 2028 Weighted-average shares applicable to diluted earnings Diluted Weighted Average Number of Shares Outstanding, Diluted Entity File Number Securities Act File Number Domestic Plan Domestic Plan [Member] Fermentation Plant Acquisition [Member] Fermentation Plant Acquisition [Member] Fermentation plant acquisition. Cover [Abstract] Fair Values and Related Carrying Values of Debt Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Derivative Instruments And Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Scenario [Domain] Defined Benefit Plan, Funded Plan [Member] Series 2022-A Notes [Member] Series Two Thousand And Twenty Two A Notes [Member] Series two thousand and twenty two A notes. Reconciliations of total equity Component Of Equity [Abstract] Component of equity. Segment Reporting Segment Reporting Disclosure [Text Block] General and Administrative Expense, Total Administrative General and Administrative Expense Contract with Customer, Duration Contract with Customer, Duration [Axis] Equipment and automobile. Equipment and Automobile [Member] Subsequent Event [Table] Railcars [Member] Railcars. Railcars [Member] Restructuring Charges Restructuring Charges, Total Business restructuring Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Maturities of Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Short-term defferred revenue Contract with Customer, Liability, Current Other Reporting Units [Member] Other Reporting Units [Member] Other reporting units. Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Severence Expenses [Member] Employee Severance [Member] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Stock-based and deferred compensation Stock Issued During Period Value Share Based And Deferred Compensation Stock issued during period value share based and deferred compensation. Interest rate contracts Interest Rate Contracts Assets Fair Value Disclosure Interest rate contracts assets fair value disclosure. Short-Term [Member] Short-Term Contract with Customer [Member] Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax, Total Defined benefit pension adjustments, net of tax (Note 11) Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Net defined benefit pension plan activity (Note 19) Lessee, operating lease, term of contract Lessee, Operating Lease, Term of Contract Lessee, operating lease, term of contract Long-Term Investments, Total Mutual fund assets Long-term investments (Note 3) Long-Term Investments Current operating lease liabilities Operating Lease, Liability, Current Current operating lease liabilities Depreciation, Depletion and Amortization, Total Depreciation and amortization Depreciation, Depletion and Amortization Depreciation and Amortization Document Transition Report Document Transition Report Multi-Currency Credit Facility with Syndicate of Banks [Member] Multi Currency Credit Facility With Syndicate Of Banks [Member] Multi-currency credit facility with syndicate of banks. Total Operating expenses Operating Expenses Operating Expenses Asset impairment charges Asset Impairment Charges Asset Impairment Charges, Total Leases Lessee, Operating Leases [Text Block] Noncompete Agreements [Member] Non-compete Agreements [Member] Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive Income (Loss) Statement of Cash Flows [Abstract] Asia [Member] Asia [Member] Derivative assets: Assets, Fair Value Disclosure [Abstract] Reconciliations of Equity Equity [Text Block] Earnings Per Share Earnings Per Share [Text Block] Net income (loss) Net Income (Loss) Increase (Decrease) in Inventories, Total Inventories Increase (Decrease) in Inventories Percentage of global minimum tax on reported profits. Percentage of Global Minimum Tax on Reported Profits Percentage of global minimum tax on reported profits Accounting Changes and Error Corrections [Abstract] Operating lease cost Operating Lease, Cost Other, net Proceeds from (Payment for) Other Financing Activity Earnings Per Share Basic [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Senior Unsecured Notes Five [Member] Senior unsecured notes five. Senior unsecured 2.73% note [Member] Intangible Assets, Net (Excluding Goodwill), Total Intangible Assets, Net (Excluding Goodwill) Other intangible assets, net Operating cash flow from operating leases Operating Lease, Payments Share Based Payment Awards Granted in Period Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Grants In Period Table [Text Block] Schedule of share based compensation arrangement by share based payment award grants in period. Assets: Assets Assets [Abstract] Specialty Products [Member] Specialty Products [Member] Specialty Products. Specialty Products [Member] Restructuring and Related Activities [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Year Focus Summary of Changes in Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Cash Flows From Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Retirement Benefits [Abstract] Accounts Payable, Current, Total Accounts payable Accounts Payable, Current Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Restructuring Cost And Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Stock option exercises Proceeds from Stock Options Exercised Proceeds from stock option exercises Fair Value Disclosures [Abstract] Unsecured bank debt and term loan in foreign currency. Unsecured Bank Debt And Term Loan In Foreign Currency [Member] Debt of foreign subsidiaries Unsecured bank debt and Term Loan, foreign currency [Member] Commitments and Contingencies Disclosure [Abstract] North America [Member] North America [Member] Lessee, Operating Lease, Liability, to be Paid, Year One 2027 Retirement Savings Contributions [Member] Retirement Savings Contributions [Member] Retirement savings contributions. Income applicable to common stock Net Income (Loss) Available to Common Stockholders, Basic Income applicable to common stock Segment Data and Reconciliation of Operating Profit Loss From Segments To Consolidated financial statements and non-GAAP measures [Table Text Block] Segment data and reconciliation of operating profit loss from segments to consolidated financial statements and non-gaap measures. Segment Data and Reconciliations of Segment Data to Consolidated Financial Statements and Non-GAAP Measures Noncash Investing and Financing Activities Cash Flow, Supplemental Disclosures [Text Block] Debt Instrument Debt Instrument [Axis] Derivative Instrument Derivative Instrument [Axis] Lessee, Operating Lease, Liability, to be Paid, after Year Five Subsequent to 2030 Interest cost Defined Benefit Plan, Interest Cost Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total Unrecognized compensation costs for stock options, stock awards and SARs Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Total assets at fair value Assets, Fair Value Disclosure Acquisitions Asset Acquisition And Business Combination [Text Block] The entire disclosure for the asset acquisition and business combination. Net Cash Used In Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Title of 12(b) Security Title of 12(b) Security Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Investment Income, Net, Total Investment income Investment Income, Net Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Decommissioning Decommissioning. Decommissioning Money Market Funds [Member] Money Market Funds [Member] Philippines Reporting Unit [Member] Philippines Reporting Unit [Member] Philippines reporting unit. Derivative foreign currency exchange contracts durations Derivative Foreign Currency Exchange Contracts Durations Derivative foreign currency exchange contracts durations. Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year 2026 (excluding the three months ended March 31, 2026) Unsecured private placement 4.86% note [Member] Unsecured Private Placement Notes Three [Member] Unsecured private placement notes three. Unsecured private placement 2.37% note [Member] Other non-current liabilities Other Liabilities, Noncurrent Total other non-current liabilities Series 2022-B Notes [Member] Series Two Thousand And Twenty Two B Notes [Member] Series two thousand and twenty two B notes. Changes in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Letters of Credit Outstanding Letters of Credit Outstanding, Amount Cash dividends paid: Dividends, Cash [Abstract] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Maturity Dates Debt Instruments Maturity Year Debt ​instruments​ maturity year. U.K Plans [Member] United Kingdom [Member] UNITED KINGDOM Senior Unsecured Notes Four [Member] Senior unsecured notes four. Senior unsecured 2.37% note [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Trading Symbol Trading Symbol Subsequent Event Type [Axis] Cash Flows From Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Total Undiscounted Cash Flows Lessee, Operating Lease, Liability, to be Paid Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Add weighted-average net shares related to unvested stock awards (under treasury stock method) Incremental Common Shares Attributable to Dilutive Effect of Nonvested Shares with Forfeitable Dividends Selling and Marketing Expense, Total Selling Selling and Marketing Expense Common Treasury Stock [Member] Equity Components [Axis] Nonoperating Income (Expense), Total Nonoperating Income (Expense) Deferred Compensation Expense Income Deferred compensation expense (income). Deferred compensation (income) expense (Note 12) Deferred compensation (income) expense Deferred compensation (income) expense Equity Component Equity Component [Domain] Stock award plan. Stock Award Plan [Member] Stock Award Plan [Member] Goodwill and Intangible Assets Disclosure [Abstract] Summary of Purchase Price Allocation for Major Components of Acquisition Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Payment of value added tax Payment Of Value Added Tax Payment of value added tax. Business Acquisition Business Combination [Axis] Debt of foreign subsidiaries Unsecured bank debt, foreign currency [Member] Unsecured Bank Debt In Foreign Currency [Member] Unsecured bank debt In foreign currency. Debt of foreign subsidiaries Unsecured bank debt, foreign currency [Member] Statement of Comprehensive Income [Abstract] Maximum [Member] Maximum [Member] Statistical Measurement Statistical Measurement [Axis] Site Contingency [Table] Site Contingency [Table] Contract with Customer, Liability, Noncurrent Long term deferred revenue One-time Termination Benefits [Member] Termination Benefits Receivables, Net, Current, Total Receivables, net Receivables, Net, Current Common Stock, Value, Issued Common stock, $1 par value; authorized 60,000,000 shares; 27,446,721 issued shares in 2026 and 27,301,177 issued shares in 2025 Other Information Other Lease Information [Abstract] Other lease information. Committed multi-currency credit facility, maturity date Line of Credit Facility, Expiration Date Summary of Amounts Reclassifications Out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Issuance of common stock under incentive compensation plan Stock Issued During Period, Value, Employee Benefit Plan Unallocated Depreciation and Amortization Unallocated Depreciation and Amortization Unallocated depreciation and amortization. Other Nonoperating Income (Expense) [Abstract] Amount of employer's best estimate of payments expected to be paid out of operating cash to plan participants during the next fiscal year beginning after the date of the latest statement of financial position. Expected Payment Related To Nonqualified Plan In Next Fiscal Year Expected payment related to non-qualified plan Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class Stock Option and Stock Appreciation Rights (SARS) Granted in 2017 [Member] Employee Stock Option And Stock Appreciation Rights S A R S Granted In Two Thousand And Seventeen [Member] Employee stock option and stock appreciation rights (SARS) granted in 2017. Performance Shares (at target) and RSUs [Member] Performance Shares and RSUs [Member] Performance Share And Restricted Stock Units [Member] Performance share and restricted stock units. Lender Name Lender Name [Axis] Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Schedule Of Business Acquisitions By Acquisition [Table] Business Combination [Table] Entity Registrant Name Entity Registrant Name Debt Debt Disclosure [Text Block] Environmental Remediation Site Environmental Remediation Site [Domain] Supplemental cash flow elements. Supplemental Cash Flow Elements [Table] Supplemental Cash Flow Elements [Table] Number of common stock shares purchased Treasury Stock, Shares, Acquired Shares purchased during period Other, net Other, net Other, net (Note 15) Other Nonoperating Income (Expense) Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Operating lease liability not yet commenced value. Operating Lease Liability Not Yet Commenced Value Leases not yet commenced Subsequent Events [Abstract] Other Net in Condensed Consolidated Statements of Income Schedule of Other Nonoperating Income (Expense) [Table Text Block] Pre-existing Contract Liabilities [Member] Pre-existing contract liabilities. Pre-existing Contract Liabilities [Member] Income Tax Expense (Benefit), Total Tax benefit Provision for Income Taxes Income Tax Expense (Benefit) Common stock Common Stock, Dividends, Per Share, Cash Paid Segment Capital Expenditures Payments to Acquire Productive Assets Payments to Acquire Productive Assets, Total Capital expenditures Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Surfactants [Member] Surfactants [Member] Surfactants. Surfactants [Member] Qualified Plan [Member] Other, Net Other Income and Other Expense Disclosure [Text Block] Net Income (Loss) Attributable to Parent, Diluted, Total Net income attributable to Stepan Company Net Income (Loss) Attributable to Parent, Diluted Net income attributable to Stepan Company Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive loss (Note 11) Accumulated Other Comprehensive Income (Loss), Net of Tax Consolidation Items Consolidation Items [Axis] Payments for Restructuring Amounts paid Payments to Acquire Property, Plant, and Equipment, Total Expenditures for property, plant and equipment Payments to Acquire Property, Plant, and Equipment Capital expenditures Purchase price for property Other, net Payment for (Proceeds from) Other Investing Activity Gain (Loss) on Investments, Total Gain (Loss) on Investments Realized and unrealized loss on long-term investments Realized and unrealized (loss) on investments Awards granted in period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Total assets Assets Assets Income Statement [Abstract] Schedule Of Restructuring And Related Costs [Table] Restructuring Cost [Table] Defined Benefit Plan, Amortization of Gain (Loss) Amortization of net actuarial loss (gain) Product Know How [Member] Product Know How. Deferred Income Tax Expense (Benefit), Total Deferred income taxes Deferred Income Tax Expense (Benefit) Deferred income taxes Lease Cost Lease, Cost [Abstract] Computation of Diluted Earnings per Share Earnings Per Share, Diluted [Abstract] Business Combination [Abstract] Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Diluted earnings per share Diluted Operating Segments [Member] Operating Segments [Member] Long-Term [Member] Long-Term Contract with Customer [Member] Retirement Plan Tax Status Retirement Plan Tax Status [Axis] City Area Code City Area Code Noncash financing activities shares issued Noncash financing activities includes shares issued. Noncash Financing Activities Includes Shares Issued Noncash financing activities shares issued Other Comprehensive Income (Loss), Net of Tax Other comprehensive income Total Other Comprehensive Income Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Business Acquisition [Line Items] Business Combination [Line Items] Schedule Of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Derivative instrument activity, net of tax (Note 11) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Variable lease cost Variable Lease, Cost Weighted-average remaining lease term-operating leases Operating Lease, Weighted Average Remaining Lease Term Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total lease cost Lease, Cost Percentage of US based union and non union employees eligible for either Statutory or companys sponsored profit sharing contributions. Percentage Of U S Based Union And Non Union Employees Eligible For Either Statutory Or Companys Sponsored Profit Sharing Contributions Percentage of us based union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions Letter of Credit [Member] Letter of Credit [Member] Unsecured private placement 2.30% note [Member] Unsecured Private Placement Notes Four [Member] Unsecured private placement notes four. Unsecured private placement 2.73% note [Member] Property, plant and equipment, net Property, Plant and Equipment, Net Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Cash and Cash Equivalents at Beginning of Period Cash and Cash Equivalents at End of Period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Operating Income Operating Income (Loss) Operating Income Operating Income (Loss) Retained Earnings [Member] Retained Earnings [Member] Defined Benefit Plan, Funding Status Defined Benefit Plan, Funding Status [Domain] Balance of trust assets Balance Of Trust Assets Balance of the trust assets. Number of shares of common stock issued under incentive compensation plan Stock Issued During Period, Shares, Employee Benefit Plan Cash and Cash Equivalents [Axis] Cash and Cash Equivalents Share-Based Payment Arrangement, Noncash Expense, Total Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Unallocated assets. Unallocated Assets Weighted-average discount rate-operating leases Operating Lease, Weighted Average Discount Rate, Percent Non-current operating lease liabilities (Note 7) Non-current operating lease liabilities Operating Lease, Liability, Noncurrent Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Class of Stock [Line Items] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net Cash Provided By Financing Activities Schedule of Lease Cost Recognized in both Cost of Sale and Operating Expenses Lease, Cost [Table Text Block] Unamortized debt issuance cost Unamortized Debt Issuance Expense Deferred income taxes Deferred Income Tax Liabilities, Net Non-current deferred tax liabilities Amortization of defined benefit pension actuarial losses Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Amortization of net actuarial gain (loss) Other Income (Expense) Nonoperating Income (Expense) [Abstract] Other Income (Expense): Derivative Contract Derivative Contract [Domain] Goodwill [Table] Schedule Of Goodwill [Table] Entity Interactive Data Current Entity Interactive Data Current Deferred revenues Increase (Decrease) in Contract with Customer, Liability Cash Flows From Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Decommissioning and Other Charges Decommissioning and Other Charges [Member] Decommissioning and other charges member. Contract assets Contract with Customer, Asset, after Allowance for Credit Loss, Total Contract with Customer, Asset, after Allowance for Credit Loss Elwood, Illinois Elwood, Illinois (Millsdale) site [Member] Elwood Illinois millsdale site member. Entity Tax Identification Number Entity Tax Identification Number Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Debt Instrument, Term Maturity Dates Number of manufacturing site Number Of Manufacturing Sites Number of manufacturing sites. 2021 Acquisitions [Member] Two Thousand And Twenty One Acquisition [Member] Two thousand and twenty one acquisition. Condensed Consolidated Financial Statements Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Local Phone Number Local Phone Number Options and Stock Appreciation Rights (SARs) [Member] Options And Stock Appreciation Rights [Member] Options and stock appreciation rights. Options and Stock Appreciation Rights (SARs) [Member] Outstanding borrowings, including term loan Line of Credit Including Term Loan Line of credit including term loan. Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Net periodic benefit cost Net periodic benefit cost Net periodic benefit cost Short-term lease cost Short-Term Lease, Cost Shares Used to Compute Net Income Per Common Share (Note 10): Weighted Average Number of Shares Outstanding, Diluted [Abstract] Shares Used to Compute Net Income Per Common Share (Note 18): Business restructuring expenses Restructuring Costs, Total Business restructuring Business restructuring expense Restructuring expenses Cash acquired on working capital Cash Acquired from Acquisition Accounting Policies [Abstract] Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Other comprehensive income ( loss) before reclassifications Disaggregation Of Revenue [Line Items] Disaggregation of Revenue [Line Items] Net Sales Net sales Revenue from Contract with Customer, Excluding Assessed Tax Schedule Of Earnings Per Share Basic By Common Class [Table] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Lessee, Operating Lease, Liability, to be Paid, Year Four 2030 Maturity date of current interest swap contract Maturity Date Of Current Interest Swap Contract Maturity date of current interest swap contract. Weighted average period for amortization of unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Stock Appreciation Rights (SARs) [Member] Noncash investing activities, payables incurred for property, plant and equipment expenditures, unpaid Noncash Or Part Noncash Investing Activities Payables Incurred For Property Plant And Equipment Expenditures Unpaid Noncash or part noncash investing activities payables incurred for property, plant and equipment expenditures unpaid. Stock, Class of Stock [Table] Entity Emerging Growth Company Entity Emerging Growth Company President and chief executive officer. President and Chief Executive Officer [Member]