Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Title of 12(b) Security Title of 12(b) Security Notional Amount Reported Value Measurement [Member] Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Schedule of Fair Value Measurements Not Recurring Fair Value Measurements, Nonrecurring [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Segment Reporting [Abstract] Segment Reporting [Abstract] Common stock Common Stock, Value, Issued China Term-Loan Bank Of China, Term Loan [Member] Bank Of China, Term Loan Restatement Determination Date Restatement Determination Date Derivative Instrument [Axis] Derivative Instrument [Axis] Income tax effects before reclassifications Other Comprehensive Income (Loss) before Reclassifications, Tax Schedule of Effective Income Tax Rates Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Amendment Flag Amendment Flag Current liabilities Liabilities, Current [Abstract] Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Total non-current liabilities Liabilities, Noncurrent Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent PEO Total Compensation Amount PEO Total Compensation Amount Capital expenditures Segment Reporting, Long-Lived Asset, Expenditure for Addition Intangible assets, net Intangible Asset, Excluding Goodwill, after Accumulated Amortization Basic (in shares) Weighted average number of common stock (in shares) Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Entity Address, City or Town Entity Address, City or Town Accounts Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Receivables [Abstract] Receivables [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Borrowing capacity Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Current portion of long-term debt and other financial liabilities Long-Term Debt, Current Maturities Emissions certificates, repurchase obligation amount Emissions Certificates, Repurchase Obligation Amount Emissions Certificates, Repurchase Obligation Amount Subsequent Event Type [Axis] Subsequent Event Type [Axis] Net gains (losses) on derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Other comprehensive income before reclassifications OCI, before Reclassifications, before Tax, Attributable to Parent Committed Committed [Member] Committed Summary of Significant Accounting Policies New Accounting Pronouncements, Policy [Policy Text Block] Amortization of debt issuance costs Amortization of Debt Issuance Costs Other comprehensive income (loss) Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent LTIP and other non-operating charges LTIP and other non-operating charges Long Term Incentive Plan And Other Non-operating Charges Long Term Incentive Plan And Other Non-operating Charges OEC LLC outstanding borrowings Orion Engineered Carbons LLC [Member] Orion Engineered Carbons LLC Document Period End Date Document Period End Date Changes in operating assets and liabilities, net: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Accumulated Other Comprehensive Income (Loss) Equity [Text Block] Loss per share: Earnings Per Share, Basic [Abstract] Security Exchange Name Security Exchange Name Treasury stock, at cost, 4,469,560 and 4,837,465 shares Treasury Stock, Common, Value Repurchase Agreement Securities Sold under Agreements to Repurchase Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Working Capital Loans Working Capital Loan [Member] Working Capital Loan Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Weighted-average shares outstanding (in thousands): Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] China Term-Loan Secured Long-Term Debt, Noncurrent Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] China Working Capital Loans (capacity $24.9 million) China Working Capital Loans [Member] China Working Capital Loans Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Amounts reclassified from AOCI Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Financial Instruments and Fair Value Measurement Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Pension and Other Postretirement Benefit Liability Adjustment Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Credit Facility [Domain] Credit Facility [Domain] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted average number of diluted common stock (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Employee benefit plan obligation Liability, Defined Benefit Plan, Noncurrent Line of Credit Facility [Table] Line of Credit Facility [Table] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Deferred taxes Deferred Income Taxes and Tax Credits Property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Other short-term debt and obligations Total of Other Short-term Debt and Obligations Short-Term Debt Guarantee obligation carrying amount Guarantor Obligations, Current Carrying Value Gross profit Gross Profit Other assets and liabilities, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Award Timing Predetermined Award Timing Predetermined [Flag] Treasury shares Treasury Stock, Common [Member] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Effective income tax rates Effective Income Tax Rate Reconciliation, Percent Proceeds from sale of emissions certificate Proceeds From Sale Of Emissions Certificate Proceeds From Sale Of Emissions Certificate Notional Amount Derivative Asset, Notional Amount Dilutive effect of share based payments (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Term Loan Term Loan [Member] Term Loan [Member] All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Right-of-use assets Operating Lease, Right-of-Use Asset Term-Loan Term Loan Facility [Member] Term Loan Facility [Member] Deferred debt issuance costs - Term-Loan Debt Issuance Costs, Current, Net AOCI related to cash flow hedges expected to be reclassified Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Schedule of Basic and Diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Financial Information by Segment Segment Reporting [Text Block] Expiration Date Trading Arrangement Expiration Date Increase in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] OEC GmbH outstanding borrowings Orion Engineered Carbons GmbH [Member] Orion Engineered Carbons GmbH OEC Huaibei outstanding borrowings Orion Engineered Carbons Huaibei [Member] Orion Engineered Carbons Huaibei Dividends Dividends, Common Stock Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Exercise Price Award Exercise Price Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Recurring Fair Value, Recurring [Member] Segment Reporting [Line Items] Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report Assets Derivative Asset [Abstract] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Interest rate swaps Interest Rate Swap [Member] Income (loss) before earnings in affiliated companies and income taxes Income (loss) before earnings in affiliated companies and income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Debt and Other Obligations Debt Disclosure [Text Block] Adjusted EBITDA Adjusted Earnings Before Interest, Tax, Depreciation And Amortization Adjusted Earnings Before Interest, Tax, Depreciation And Amortization Repayments of long-term debt Repayments of Long-Term Debt Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Investment in equity method affiliates Equity Method Investments Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Adoption Date Trading Arrangement Adoption Date Total stockholders' equity Beginning balance Ending balance Equity, Attributable to Parent Income tax liabilities Increase (Decrease) in Accrued Taxes Payable ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Nonrecurring Fair Value, Nonrecurring [Member] Insider Trading Policies and Procedures [Line Items] Expected credit losses Accounts Receivable, Allowance for Credit Loss, Current Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Schedule of Other Short-Term Debt and Obligations Schedule of Line of Credit Facilities [Table Text Block] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Selling, general and administrative expenses Selling, General and Administrative Expense Interest and other financial expense, net Interest and other financial expense, net Interest Income (Expense), Nonoperating Loss on receivables Gain (Loss) on Sale of Accounts Receivable Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Number of operating segments Number of Operating Segments Entity Central Index Key Entity Central Index Key Deferred debt issuance costs - Term-Loan Debt Issuance Costs, Noncurrent, Net All Adjustments to Compensation All Adjustments to Compensation [Member] Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Stockholders' equity Equity, Attributable to Parent [Abstract] Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Designated as Hedging Instrument Designated as Hedging Instrument [Member] Deferred income tax assets Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Accumulated other comprehensive loss AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Term-Loan Debt Instrument, Fair Value Disclosure Dividends paid Payments of Dividends Name Forgone Recovery, Individual Name Finished goods, net Inventory, Finished Goods, Net of Reserves Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total non-current assets Assets, Noncurrent Total assets Assets Assets Number of emission allowance certificates sold Number Of Emission Allowance Certificates Sold Number Of Emission Allowance Certificates Sold Entity [Domain] Entity [Domain] Rubber Rubber [Member] Rubber [Member] Operating segments Operating Segments [Member] Defined benefit plans, net Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent PEO PEO [Member] Total Debt, Long-Term and Short-Term, Combined Amount Long term incentive plan Share-Based Payment Arrangement, Expense Measurement Basis [Axis] Measurement Basis [Axis] Other liabilities Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Other provisions Increase (Decrease) In Provisions Increase (Decrease) In Provisions Subsequent Event Type [Domain] Subsequent Event Type [Domain] Retained earnings Retained Earnings [Member] Income taxes payable Taxes Payable, Current Revolving Credit Facility Revolving Credit Facility [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Payments for debt issue costs Payments of Debt Issuance Costs Diluted (in USD per share) Diluted loss per share (in USD per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Research and development costs Research and Development Expense Income tax effects on reclassifications Reclassification from AOCI, Current Period, Tax Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net sales Net sales from external customers Revenue from Contract with Customer, Excluding Assessed Tax Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Outstanding Line of Credit, Current Fair Value Derivative Asset Inventories Inventory Disclosure [Text Block] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Fair Value Estimate of Fair Value Measurement [Member] Term-Loan Long-term Debt, Excluding Current Maturities, Gross Long-term Debt, Excluding Current Maturities, Gross Inventories Increase (Decrease) in Inventories Revolving Credit Facility Revolving Credit Facility, Total Commitment [Member] Revolving Credit Facility, Total Commitment Segment Reporting [Table] Segment Reporting [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Income (loss) from operations Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Dividends per share (in USD per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Issuance of stock under equity compensation plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Gain (Loss) Reclassified from AOCI to Income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Uncommitted Uncommitted [Member] Uncommitted Treasury stock, cost (in shares) Treasury Stock, Common, Shares Equity Components [Axis] Equity Components [Axis] Trade receivables Increase (Decrease) in Accounts Receivable Entity Interactive Data Current Entity Interactive Data Current Deferred income tax liabilities Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Trade payables Increase (Decrease) in Accounts Payable, Trade Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other current liabilities Other Liabilities, Current Other assets Other Assets, Noncurrent Pre-tax termination gain Other Comprehensive Income (Loss), Cash Flow Hedge, Reclassification for Discontinuance, before Tax Document Type Document Type Accrued liabilities Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Organization, Description of the Business and Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Currency translation AOCI Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Ancillary Credit Facilities Revolving Credit Facility, Ancillary Credit Facilities [Member] Revolving Credit Facility, Ancillary Credit Facilities Local Phone Number Local Phone Number Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Accrued interest Securities Sold Under Agreements To Repurchase Including Interest Securities Sold Under Agreements To Repurchase Including Interest Commitments and contingencies Commitments and Contingencies Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Earnings in affiliated companies, net of tax Equity in earnings of affiliated companies, net of tax Equity in earnings of affiliated companies, net of tax Income (Loss) from Equity Method Investments Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] China Working Capital Loans (capacity $24.9 million) CHINA LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Inventories, net Inventories, net Inventory, Net All Award Types Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Cash outflows related to current financial liabilities Cash Outflows Related To Current Financial Liabilities, Financing Activities Cash Outflows Related To Current Financial Liabilities, Financing Activities Repurchases of Common stock (in shares) Treasury Stock, Shares, Acquired PEO Name PEO Name Geographical [Axis] Geographical [Axis] Less restricted cash at the end of the period Restricted Cash Hedging Activities Adjustments Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Other segment items Segment Reporting, Other Segment Item, Amount Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Legal Entity [Axis] Legal Entity [Axis] Repurchases of Common stock Treasury Stock, Value, Acquired, Cost Method Cash, cash equivalents and restricted cash at the beginning of the period Cash, cash equivalents and restricted cash at the end of the period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Share-based compensation Share-Based Payment Arrangement, Noncash Expense Gross amount of receivables sold Accounts Receivable, Sale Cash inflows related to current financial liabilities Cash Inflows Related To Current Financial Liabilities, Financing Activities Cash Inflows Related To Current Financial Liabilities, Financing Activities Schedule of Debt and Other Obligations Schedule of Debt [Table Text Block] Schedule of Inventories, Net of Reserves Schedule of Inventory, Current [Table Text Block] Basic (in USD per share) Basic loss per share (in USD per share) Earnings Per Share, Basic Repurchase of Common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Insider Trading Arrangements [Line Items] Long-term debt, net Long-term debt, net Long-Term Debt, Excluding Current Maturities Award Type Award Type [Axis] Gain (Loss) Recognized in AOCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Specialty Specialties [Member] Specialties [Member] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Current portion of Term-Loan Long-Term Debt, Gross, Current Long-Term Debt, Gross, Current Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common stock Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Derivative Contract [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders' equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Current portion of long-term debt and other financial liabilities Debt, Current Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Other non-operating Other Nonoperating Income (Expense) Income tax receivables Income Taxes Receivable, Current Other expenses, net Other Operating Income (Expense), Net Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Acquisition of property, plant and equipment Payments to Acquire Productive Assets Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Derivatives Instruments Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional paid-in capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Goodwill impairment Goodwill, Impairment Loss Name Trading Arrangement, Individual Name Cross currency swaps Cross currency swaps Currency Swap [Member] Current Long-Term Debt, Current Maturities [Abstract] Cash and cash equivalents Cash and cash equivalents at the end of the period Cash and Cash Equivalent Raw materials, consumables and supplies, net Inventory, Raw Materials, Net of Reserves Company Selected Measure Amount Company Selected Measure Amount Schedule of Reconciliation of Operating Profit (Loss) from Segments to Consolidated Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Depreciation of property, plant and equipment and amortization of intangible assets and right of use assets Depreciation of property, plant and equipment and amortization of intangible assets and right of use assets Depreciation, Depletion and Amortization Entity Address, Address Line Two Entity Address, Address Line Two Non-current Long-Term Debt, Excluding Current Maturities [Abstract] Issuance of stock under equity compensation plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Current assets Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense (benefit) Income Tax Expense (Benefit) Foreign currency transactions Gain (Loss), Foreign Currency Transaction, before Tax Adjustments to reconcile Net loss to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Cost of sales Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Korea Working Capital Loans (capacity $53.5 million) KOREA, REPUBLIC OF AOCI Attributable to Parent, Net of Tax AOCI Attributable to Parent, Net of Tax [Roll Forward] Net loss Net loss Net (loss) income Net loss attributable to ordinary equity holders Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Changes in AOCI, Net of Tax Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Gross amount of receivables sold Financing Receivable, Sale Recovery due to misappropriation of assets, net Loss (Recovery) Due To Misappropriation Of Assets Loss (Recovery) Due To Misappropriation Of Assets Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]