Inventory Disclosure [Abstract] Inventories [Text Block] Inventory Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Statement, Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Number of Common Shares Capital Units [Member] Common Stock Common Stock [Member] Retained Earnings Retained Earnings [Member] Paid-in Capital Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income(Loss) AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Balance, shares Common Stock, Shares, Outstanding Balance Stockholders' Equity Attributable to Parent Net income Net Income (Loss) Attributable to Parent Other comprehensive (loss) income, net of tax Other Comprehensive Income (Loss), Net of Tax Proceeds from stock award exercises and issuances, shares Stock Issued During Period, Shares, New Issues Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Stock Issued During Period, Value, Stock Options Exercised Proceeds from stock award exercises and issuances Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition Share-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock Repurchased During Period, Shares Stock Repurchased During Period, Shares Stock Repurchased During Period, Value Stock Repurchased During Period, Value Excess tax benefits from exercise of stock options Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Restricted Stock Award, Forfeitures Restricted Stock Award, Forfeitures Dividends declared Dividends, Cash Balance, shares Balance Schedule of Inventory, Current [Table Text Block] Schedule of Inventory, Current [Table Text Block] Other Liabilities, Current [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts Payable and Accrued Liabilities Disclosure [Text Block] Payroll related Accrued Salaries, Current Freight and rebates Accrued Freight and Rebate Liabilities, Current Accrued Freight and Rebate Liabilities, Current Benefits and pensions Accrued Employee Benefits and Pension, Current Accrued Employee Benefits and Pension, Current Accrual for Taxes Other than Income Taxes, Current Accrual for Taxes Other than Income Taxes, Current Accrued Income Taxes Accrued Income Taxes Equity repurchases Equity repurchases Equity repurchases Other Other Sundry Liabilities, Current Other Liabilities, Current Other Liabilities, Current Share-based Compensation [Abstract] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Dividends [Abstract] Dividends Payable [Table] Dividends Payable [Table] Dividends [Axis] Dividends [Axis] Dividends [Domain] Dividends [Domain] Dividends Payable [Line Items] Dividends Payable [Line Items] Dividends declared - per share Common Stock, Dividends, Per Share, Declared Dividends declared - aggregate Dividends, Common Stock, Cash Common Stock, Dividends, Per Share, Cash Paid Common Stock, Dividends, Per Share, Cash Paid Dividends paid - aggregate Payments of Ordinary Dividends, Common Stock DEI [Abstract] DEI [Abstract] Document Information [Table] Document Information [Table] Document Information, Document [Axis] Document Information, Document [Axis] Document [Domain] Document [Domain] Document Information [Line Items] Document Information [Line Items] Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol 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 Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Income Tax Disclosure [Text Block] Income Tax Disclosure [Text Block] Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] Pension Plans and Postretirement Benefits [Table] Pension and Postretirement Benefits [Table] Pension and Postretirement Benefits [Table] Statement, Geographical [Axis] Geographical [Axis] Segment, Geographical [Domain] Geographical [Domain] UNITED STATES UNITED STATES CANADA CANADA Pension Plans and Postretirement Benefits [Line Items] Pension and Postretirement Benefits [Line Items] Pension and Postretirement Benefits [Line Items] Schedule of Net Benefit Costs [Table Text Block] Schedule of Net Benefit Costs [Table Text Block] Short-term Borrowings, Long-Term Debt, and Interest Expense: [Abstract] Short-term Borrowings, Long-Term Debt, and Interest Expense: [Abstract] Debt Instruments [Abstract] Debt Instruments [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Covenant Ratio [Axis] Debt Covenant Ratio [Axis] Debt Covenant Ratio [Axis] Debt Covenant Ratio [Domain] Debt Covenant Ratio [Domain] [Domain] for Debt Covenant Ratio [Axis] Senior Leverage Ratio Incurrence test [Member] Senior Leverage Ratio Incurrence test [Member] Senior Leverage Ratio Incurrence test [Member] Ratio Range [Axis] Ratio Range [Axis] Ratio Range [Axis] Ratio Range [Domain] Ratio Range [Domain] Ratio Range [Domain] High Range Ratio [Member] High Range Ratio [Member] High Range Ratio [Member] Low Range Ratio [Member] Low Range Ratio [Member] Low Range Ratio [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Term Loan [Member] Notes Payable to Banks [Member] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Letter of Credit, Sub-Facility [Member] Letter of Credit, Sub-Facility [Member] Letter of Credit, Sub-Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Term loan due 2017 Long-term Debt Revolver borrowings under the credit facility Long-term Line of Credit Capital Lease Obligations Capital Lease Obligations Debt and Capital Lease Obligations Debt and Capital Lease Obligations Long-term Debt and Capital Lease Obligations, Current Long-term Debt and Capital Lease Obligations, Current Long-term Debt and Capital Lease Obligations Long-term Debt and Capital Lease Obligations Line of Credit Facility, Current Borrowing Capacity Line of Credit Facility, Current Borrowing Capacity Repayments of Debt, Percent of Original Loan Balance Periodic Prepayment of Debt, Required, Percent of Original Loan Balance Periodic Prepayment of Debt, Required, Percent of Original Loan Balance Line of Credit Facility, Remaining Borrowing Capacity Line of Credit Facility, Remaining Borrowing Capacity Debt, Weighted Average Interest Rate Debt, Weighted Average Interest Rate Amortization of Financing Costs Notional Amount of Interest Rate Derivatives Derivative, Notional Amount Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Interest Rate Derivative Assets, at Fair Value Interest Rate Derivative Liabilities, at Fair Value Interest Paid Interest Paid Interest Expense [Abstract] Interest Expense [Abstract] Interest expense Interest Expense, Debt Deferred financing cost Interest income Interest Income, Operating Less: amount capitalized for capital projects Interest Costs Capitalized Total interest expense, net Interest and Debt Expense Debt Instrument, Covenant, Total Leverage Ratio Debt Instrument, Covenant, Total Leverage Ratio Debt Instrument, Covenant, Total Leverage Ratio Debt Instrument, Covenant, Senior Leverage Ratio Debt Instrument, Covenant, Senior Leverage Ratio Debt Instrument, Covenant, Senior Leverage Ratio Debt Instrument, Covenant, Fixed Charge Coverage Ratio Debt Instrument, Covenant, Fixed Charge Coverage Ratio Debt Instrument, Covenant, Fixed Charge Coverage Ratio Actual Total Leverage Ratio, Debt Covenant Actual Senior Leverage Ratio, Debt Covenant Actual Senior Leverage Ratio, Debt Covenant Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Statement, Business Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Specialty Phosphates US & Canada [Member] Specialty Phosphates US & Canada [Member] Specialty Phosphates US & Canada [Member] Specialty Phosphates Mexico [Member] Specialty Phosphates Mexico [Member] Specialty Phosphates Mexico [Member] GTSP & Other [Member] GTSP & Other [Member] GTSP & Other [Member] Intersegment Eliminations [Member] Intersegment Eliminations [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Sales Revenues Revenue from Related Parties Revenue from Related Parties Total sales Revenue, Net Operating income Operating Income (Loss) Depreciation and amortization expense Depreciation, Depletion and Amortization Earnings Per Share Reconciliation [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Less: earnings attributable to unvested shares Earnings Attributable to Unvested Shares Earnings Attributable to Unvested Shares Net income available to participating common shareholders Net Income (Loss) Available to Common Stockholders, Basic Basic number of common shares, outstanding Weighted Average Basic Shares Outstanding, Pro Forma Dilutive effect of stock equivalents Weighted Average Number Diluted Shares Outstanding Adjustment Dilutived number of weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Diluted Earnings per common share - Basic Earnings Per Share, Basic Earnings per common share - Diluted Earnings Per Share, Diluted Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Liabilities, Other than Long-term Debt, Noncurrent [Abstract] Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Pension and post retirement liabilities Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent Liability for Uncertain Tax Positions, Noncurrent Liability for Uncertain Tax Positions, Noncurrent Environmental liabilities Accrual for Environmental Loss Contingencies Other liabilities Other Sundry Liabilities, Noncurrent Other Liabilities, Noncurrent Other Liabilities, Noncurrent Balance Sheets [Abstract] Balance Sheets [Abstract] ASSETS Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net Accounts Receivable, Net, Current Inventories Inventory, Net Other current assets Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangibles and other assets, net Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Current portion of long-term debt Long-term Debt, Current Maturities Accounts payable, trade and other Accounts Payable, Current Other current liabilities Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Other long-term liabilities Total liabilities Liabilities Commitments and contingencies (note 13) Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, par value $.001 per share; authorized 100,000,000 shares; issued 22,530,969 and 22,447,058 shares and outstanding 20,001,272 and 21,480,334 shares Common Stock, Value, Issued Paid-in capital Additional Paid in Capital, Common Stock Common stock held in treasury, at cost (2,529,697 and 966,724 shares) Treasury Stock, Value Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Share-bsed Compensation [Abstract] Share-bsed Compensation [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Statements of Cash Flows [Abstract] Statements of Cash Flows [Abstract] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Amortization of deferred financing charges Deferred income tax (benefit) provision Deferred Income Tax Expense (Benefit) Share-based compensation Share-based Compensation Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Increase in accounts receivable Increase (Decrease) in Accounts Receivable Decrease in inventories Increase (Decrease) in Inventories Decrease in other current assets Increase (Decrease) in Other Operating Assets Decrease in accounts payable Increase (Decrease) in Accounts Payable (Decrease) increase in other current liabilities Increase (Decrease) in Other Operating Liabilities Changes in other long-term assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided from operating activities Net Cash Provided by (Used in) Operating Activities Cash flows used for investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Net cash used for investing activities Net Cash Provided by (Used in) Investing Activities Cash flows used for financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Long-term debt borrowings Proceeds from Issuance of Long-term Debt Long-term debt repayments Repayments of Long-term Debt Excess tax benefits from exercise of stock options Excess Tax Benefit from Share-based Compensation, Financing Activities Common stock repurchases and restricted stock forfeitures Payments for Repurchase of Common Stock Dividends paid Net cash provided from (used for) financing activities Net Cash Provided by (Used in) Financing Activities Effect of Exchange Rate on Cash and Cash Equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net change in cash Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Raw materials Inventory, Raw Materials, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Spare parts Inventory, Parts and Components, Net of Reserves Inventory, Net Inventory Valuation Reserves Inventory Valuation Reserves Balance Sheet Parenthetical [Abstract] Balance Sheet Parenthetical [Abstract] Common Stock, Shares, Issued Common Stock, Shares, Issued Common Stock, Shares, Outstanding Treasury Stock, Shares Treasury Stock, Shares Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Common Stock, Shares Authorized Common Stock, Shares Authorized Other Current Assets: [Abstract] Other Current Assets: [Abstract] Other Current Assets [Text Block] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Segment Reporting [Text Block] Segment Reporting Disclosure [Text Block] Schedule of Other Long-Term Liabilities Schedule of Other Long-Term Liabilities Schedule of Other Long-Term Liabilities 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] New Accounting Pronouncements and Changes in Accounting Principles [Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Description of Business and Principles of Consolidation [Policy Text Block] Business Description and Basis of Presentation [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Restricted Stock Plans [Axis] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Restricted Stock Plans [Axis] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Restricted Stock Plans [Axis] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Restricted Stock Plans [Domain] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Restricted Stock Plans [Domain] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Restricted Stock Plans [Domain] Restricted Stock [Member] Restricted Stock [Member] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Employee Stock Option [Member] Employee Stock Option [Member] Performance Shares [Member] Performance Shares [Member] 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, Shares Issued in Period Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Share-based Compensation Stock Granted, Value, Share-based Compensation, Gross External Members of the Board of Directors External Members of the Board of Directors External Members of the Board of Directors Shares owned by external directors Shares owned by external directors Shares owned by external directors Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Stock Repurchased During Period, Shares Treasury Stock Acquired, Average Cost Per Share Treasury Stock Acquired, Average Cost Per Share Dividends [Text Block] Dividends [Text Block] Text Block Tag to encapsulate the entire disclosure of dividends declared and dividends paid. Statements of Stockholders' Equity (Parenthetical) [Abstract] Statements of Stockholders' Equity (Parenthetical) [Abstract] Other Comprehensive Income (Loss), Tax Other Comprehensive Income (Loss), Tax Intangibles and Other Assets, net: [Abstract] Intangibles and Other Assets, net: [Abstract] Intangibles and Other Assets [Table Text Block] Intangibles and Other Assets [Table Text Block] Intangibles and Other Assets [Table Text Block] Short-Term Borrowings and Long-Term Debt [Table Text Block] Short-Term Borrowings and Long-Term Debt [Table Text Block] Short-Term Borrowings and Long-Term Debt [Table Text Block] Components of Interest Expense, Net [Table Text Block] Components of Interest Expense, Net [Table Text Block] Components of Interest Expense, Net [Table Text Block] Schedule of Dividends Payable [Table Text Block] Schedule of Dividends Payable [Table Text Block] Income Tax Disclosure [Abstract] Income Tax Examination [Table] Income Tax Examination [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Canada [Member] Canada [Member] Canada [Member] Income Tax Examination [Line Items] Income Tax Examination [Line Items] Effective Income Tax Rate, Continuing Operations Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Tax Contingencies Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority Income Tax Examination, Likelihood of Unfavorable Settlement Income Tax Examination, Likelihood of Unfavorable Settlement Income Taxes Paid Income Taxes Paid Other Current Liabilities [Table Text Block] Other Current Liabilities [Table Text Block] Accumulated Other Comprehensive Income (Loss) [Abstract] Accumulated Other Comprehensive Income (Loss) [Abstract] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Stock options Stock or Unit Option Plan Expense Restricted stock Restricted Stock or Unit Expense Performance shares Performance Shares Expense Performance Shares Expense Stock Grants Expense Stock Grants Expense Stock Grants Expense Total stock-based compensation expense Intangibles and Other Assets, net [Text Block] Intangibles and Other Assets [Text Block] Intangibles and Other Assets [Text Block] Entire footnote disclosure of intangibles and other long-term assets. Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Equity Components [Axis] 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 Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Consolidated Statements of Comprehensive Income (Paranthetical) [Abstract] Consolidated Statements of Comprehensive Income (Paranthetical) [Abstract] Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Other Comprehensive Income (Loss) Pension and Post-Retirement Plans Tax Effect Period Increase Decrease Other Comprehensive Income (Loss) Pension and Post-Retirement Plans Tax Effect Period Increase Decrease Other Comprehensive Income (Loss) Pension and Post-Retirement Plans Tax Effect Period Increase Decrease Commitments and Contingencies Disclosure [Abstract] Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Disclosure [Text Block] Pension and Other Postretirement Benefits Disclosure [Text Block] Pension and Other Postretirement Benefits Disclosure [Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Pension Benefits [Member] Pension Plan [Member] Other Benefits [Member] Other Pension Plan, Postretirement or Supplemental Plans [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan, Service Cost Defined Benefit Plan, Service Cost Defined Benefit Plan, Interest Cost Defined Benefit Plan, Interest Cost Defined Benefit Plan, Expected Return on Plan Assets Defined Benefit Plan, Expected Return on Plan Assets Defined Benefit Plan, Amortization of Gains (Losses) Defined Benefit Plan, Amortization of Gains (Losses) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Defined Benefit Plan, Other Costs Defined Benefit Plan, Other Costs Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets Defined Benefit Plan, Net Periodic Benefit Cost Defined Benefit Plan, Net Periodic Benefit Cost Employer Contributions Defined Benefit Plan, Contributions by Employer Defined Contribution Plan, Employer Discretionary Contribution Amount Defined Contribution Plan, Employer Discretionary Contribution Amount Creditable taxes (value added taxes) Value Added Tax Receivable, Current Vendor inventory deposits (prepaid) Prepaid Vendor Inventory Deposits, Current Prepaid Vendor Inventory Deposits, Current Prepaid income taxes Income Taxes Receivable, Current Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance, Current Prepaid Insurance Prepaid Insurance Other Other Assets, Miscellaneous, Current Other Assets, Current Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Other Liabilities Disclosure [Text Block] Other Long Term Liabilities Disclosure [Text Block] Other Long Term Liabilities Disclosure [Text Block] Leases Operating [Abstract] Leases, Operating [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Environmental [Member] Environmental Issue [Member] Civil Penalty [Domain] Civil Penalty [Domain] Civil Penalty Mexicana vs. Sudamfos Lawsuit [Member] Mexicana vs. Sudamfos Lawsuit [Member] Mexicana vs. Sudamfos Lawsuit [Member] Louisiana sales and use tax [Member] Louisiana sales and use tax [Member] Louisiana sales and use tax Loss Contingencies [Line Items] Loss Contingencies [Line Items] Environmental Exit Costs, Anticipated Cost Environmental Exit Costs, Anticipated Cost Accrual for Environmental Loss Contingencies Estimated Litigation Liability Liabilities Subject to Compromise, Environmental Contingencies Loss Contingency, Damages Sought, Value Loss Contingency, Damages Sought, Value Phosphoric Acid Phosphoric Acid Phosphoric Acid Loss Contingency, Damages Sought, Counter Lawsuit Loss Contingency, Damages Sought, Counter Lawsuit Loss Contingency, Damages Sought, Counter Lawsuit Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] Pension and Other Postretirement Plans Costs [Member] Pension and Other Postretirement Plans Costs [Member] Interest Rate Swap [Member] Interest Rate Swap [Member] AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Other comprehensive income (loss), net of Tax Intangibles and Other Assets, net [Table] Intangibles and Other Assets, net [Table] Intangibles and Other Assets, net [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] Developed Technology and Application Patents [Member] Developed Technology and Application Patents [Member] Developed Technology and Application Patents [Member] Customer Relationships [Member] Customer Relationships [Member] Trade Names and License Agreements [Member] Trade Names and License Agreements [Member] Trade Names and License Agreements [Member] Noncompete Agreements [Member] Noncompete Agreements [Member] Developed Technology Rights [Member] Developed Technology Rights [Member] Trade Names [Member] Trade Names [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Accumulated Amortization, Deferred Finance Costs Accumulated Amortization, Deferred Finance Costs Finite-Lived Intangible Assets, Useful Life Finite-Lived Intangible Asset, Useful Life Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill) Deferred Finance Costs, Net Deferred Finance Costs, Net Long-term Investments and Receivables, Net Long-term Investments and Receivables, Net Other Assets, Miscellaneous Other Assets, Miscellaneous Other Assets Other Assets Other Assets, Noncurrent Statement of Comprehensive Income [Abstract] Net sales Cost of goods sold Cost of Goods Sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Selling, general and administrative Selling, General and Administrative Expense Research & development expenses Research and Development Expense Total operating expenses Operating Expenses Operating income Interest expense, net Foreign exchange loss (gain) Foreign Currency Transaction Loss, before Tax Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Net income attributable to participating common shareholders Per share data (note 2): Per share data (see Note 2): [Abstract] Per share data (see Note 2): [Abstract] Income per participating share: Basic Diluted Weighted average participating shares outstanding: Weighted average common shares outstanding: [Abstract] Weighted average common shares outstanding: [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic Diluted Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in interest rate swaps, (net of tax ($22), ($236), $245 and ($268)) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Change in pension and post-retirement plans, (net of tax ($7), ($19), ($108) and $20) Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax Other comprehensive (loss) income, net of tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Debt and Interest Short-Term Debt, Long-Term Debt and Interest Expense, Net [Text Block] Short-Term Debt, Long-Term Debt and Interest Expense, Net [Text Block] Earnings Per Share (EPS) Earnings Per Share [Text Block] Schedule of Other Assets [Table Text Block] Schedule of Other Assets [Table Text Block]