Cover [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Document Information [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Title of 12(b) Security Trading Symbol Security Exchange Name Entity Common Stock, Shares Outstanding Entity File Number Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, Postal Zip Code City Area Code Local Phone Number Document Transition Report Entity Address, Country Document Annual Report Entity Public Float Entity Well-known Seasoned Issuer Entity Voluntary Filers ICFR Auditor Attestation Flag Statement of Financial Position [Abstract] Assets [Abstract] Assets Assets, Current [Abstract] Current assets Accounts Receivable, Net, Current Accounts receivable, net Accounts receivable, net Assets, Current Total current assets Inventory, Net Inventories, net Inventories, net Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Beginning of the period End of the period Other Receivables, Net, Current Other receivables Hedging Assets, Current Hedge collateral (Note 10) Other Assets, Current Other current assets Prepaid Expense, Current Prepaid expenses Disposal Group, Including Discontinued Operation, Assets, Current Current assets held for sale (Note 2) Total current assets held for sale Assets Total assets Finite-Lived Intangible Assets, Net Intangible assets, net Intangible asset, Net amount Prepaid Expense, Noncurrent Long-term prepaid expenses Property, Plant and Equipment, Net Property, plant and equipment, net Property, plant and equipment, net Other Assets, Noncurrent Other non-current assets Operating Lease, Right-of-Use Asset Operating lease right-of-use assets Operating lease Disposal Group, Including Discontinued Operation, Assets, Noncurrent Non-current assets held for sale (Note 2) Deferred Income Tax Assets, Net Deferred income taxes (Note 17) Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities and Equity Total liabilities and stockholders' equity Liabilities, Current [Abstract] Current liabilities Accounts Payable, Other, Current Other accounts payable Accounts Payable, Trade, Current Accounts payable Accrued Liabilities, Current Accrued expenses (Note 9) Accrued expenses Liabilities, Current Total current liabilities Disposal Group, Including Discontinued Operation, Liabilities, Current Current liabilities held for sale (Note 2) Total current liabilities held for sale Other Liabilities, Current Other current liabilities Long-term Debt, Current Maturities Current portion of long-term borrowings, net Less: current portion of long-term borrowings, net Operating Lease, Liability, Current Operating lease liabilities Operating Accrued Income Taxes, Current Accrued income taxes Liabilities Total liabilities Other Liabilities, Noncurrent Other non-current liabilities Long-term Debt, Excluding Current Maturities Long-term borrowings, net Carrying amount of senior notes Commitments and Contingencies Commitments and contingencies (Note 19) Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Total Additional Paid in Capital, Common Stock Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings (deficit) Impact of adopting the new revenue standard Common Stock, Value, Issued Common stock, $0.01 par value, 150,000,000 shares authorized, 44,943,854 shares issued and 35,783,347 outstanding at December 31, 2020 and 43,851,991 shares issued and 34,800,312 outstanding at December 31, 2019 Stockholders' Equity Attributable to Parent Total stockholders' equity (deficit) Balance beginning Balance ending Treasury Stock, Value Treasury stock, 9,160,507 shares at December 31, 2020 and 9,051,679 shares at December 31, 2019, respectively Supplemental Unemployment Benefits, Severance Benefits Accrued severance benefits, net Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Non-current liabilities held for sale (Note 2) Operating Lease, Liability, Noncurrent Non-current operating lease liabilities Operating Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Balance, Shares ending Balance, Shares beginning Treasury Stock, Shares Treasury stock, shares Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Revenues [Abstract] Revenues: Statement [Table] Statement [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Standard Products Group [Member] Standard Products Group [Member] Standard Products Group [Member] Standard Products Group [Member] Fab Three Foundry Services [Member] Fab Three Foundry Services [Member] Fab Three Foundry Services Statement [Line Items] Statement [Line Items] Operating Income (Loss) Operating income: Operating income Cost of Goods and Services Sold Cost of sales Shipping and handling cost Other Nonoperating Income (Expense) Other income (expense), net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) from continuing operations before income tax expense Foreign Currency Transaction Gain (Loss), before Tax Foreign currency loss, net Gross Profit Gross profit Total gross profit Gross profit Interest Income (Expense), Nonoperating, Net Interest expense Net Income (Loss) Attributable to Parent Net income (loss) Net income (loss) Net income (loss) Income Tax Expense (Benefit) Income tax expense (benefit) Income tax expenses (benefits) Total income tax expenses (benefit) Total income tax expenses (benefit) Earnings Per Share, Basic [Abstract] Basic earnings (loss) per common share— Basic earnings (loss) per share Earnings Per Share, Basic Total Total Income (Loss) from Continuing Operations, Per Basic Share Continuing operations Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Discontinued operations Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted average number of shares— Weighted average number of shares— Weighted Average Number of Shares Outstanding, Diluted Diluted Diluted weighted average common stock outstanding Weighted Average Number of Shares Outstanding, Basic Basic Basic weighted average common stock outstanding Basic weighted average common stock outstanding Basic Revenues Net sales Total revenues Revenues Earnings Per Share, Diluted [Abstract] Diluted earnings (loss) per common share— Diluted earnings (loss) per common share— Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Discontinued operations Earnings Per Share, Diluted Total Total Income (Loss) from Continuing Operations, Per Diluted Share Continuing operations Operating Expenses [Abstract] Operating expenses: Operating Expenses Total operating expenses Research and Development Expense Research and development expenses Selling, General and Administrative Expense Selling, general and administrative expenses Early Termination and Other Charges Early termination and other charges Early Termination and Other Charges . Loss on early extinguishment of long-term borrowings, net Loss on early extinguishment of borrowings, net Loss on early extinguishment of borrowings, net Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Income (loss) from continuing operations Income (loss) from continuing operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Income (loss) from discontinued operations, net of tax Income (loss) from discontinued operations, net of tax Income (loss) from discontinued operations, net of tax Statement of Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive income (loss) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Foreign currency translation adjustments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent [Abstract] Derivative adjustments Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total other comprehensive income Other comprehensive income, net Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Reclassification adjustment for loss (gain) on derivatives included in net income (loss) Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Fair valuation of derivatives Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income (loss) Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Additional Paid-in Capital [Member] Additional Paid-In Capital [Member] Common Stock [Member] Common Stock [Member] Common Stock Outstanding [Member] Common Stock Outstanding [Member] Common Stock Outstanding [Member] Treasury Stock [Member] Treasury Stock [Member] Retained Earnings [Member] Retained Earnings (Deficit) [Member] AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Income (Loss) [Member] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Stock Issued During Period, Value, Restricted Stock Award, Gross Settlement of restricted stock units Stock Issued During Period, Shares, Restricted Stock Award, Gross Settlement of restricted stock units, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options, Shares Exercised, Number of Options Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options Treasury Stock, Shares, Acquired Acquisition of treasury stock, Shares Repurchase of common stock, shares Treasury Stock, Value, Acquired, Cost Method Acquisition of treasury stock Repurchase of common stock Restatement [Axis] Scenario [Axis] Restatement [Domain] Scenario, Unspecified [Domain] Revision of Prior Period, Accounting Standards Update, Adjustment [Member] Revision of Prior Period, Accounting Standards Update, Adjustment [Member] Statement of Cash Flows [Abstract] Cash and Cash Equivalents, at Carrying Value [Abstract] Cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase in cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Effect of exchange rates on cash and cash equivalents Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash investing and financing activities Capital Expenditures Incurred but Not yet Paid Property, plant and equipment additions in other accounts payable Acquisition Of Treasury Stock Related To Tax With holding For Share Based Compensation Acquisition of treasury stock to satisfy the tax withholding obligations in connection with equity-based compensation Acquisition of treasury stock related to tax with holding for share based compensation Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows from investing activities Payments to Acquire Intangible Assets Payment for intellectual property registration Proceeds from Guarantee Deposits Collection of guarantee deposits Proceeds from Guarantee Deposits Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities Payments for (Proceeds from) Other Investing Activities Others, net Payments For Guarantee Deposits Payment of guarantee deposits Payments for guarantee deposits. Payments for Hedge, Investing Activities Payment of hedge collateral Payments to Acquire Property, Plant, and Equipment Purchase of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from disposal of plant, property and equipment Proceeds from Hedge, Investing Activities Proceeds from settlement of hedge collateral Proceeds from Divestiture of Businesses Proceeds from sale of discontinued operations Payments To Acquire water treatment facility arrangement Payment for property related to water treatment facility arrangement The cash outflow for the purchase of a facility and equipment that provides water supply which includes wells, reservoirs, pumping stations, and control facilities. Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities Payments for Repurchase of Common Stock Acquisition of treasury stock Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Repurchase of long-term borrowings Repayment of borrowings Proceeds from property related to water treatment facility arrangement (Note 5) Proceeds from property related to water treatment facility arrangement Proceeds from Stock Options Exercised Proceeds from exercise of stock options Repayment of financing related to water treatment facility arrangement (Note 5) Repayment of financing related to water treatment facility arrangement Proceeds from (Payments for) Other Financing Activities Others Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities Increase (Decrease) in Inventories Inventories Increase (Decrease) in Other Current Liabilities Other current liabilities Increase (Decrease) in Accounts Payable, Trade Accounts payable Increase Decrease In Contract Liability Deferred revenue The increase (decrease) during the reporting period, contract with liability. Increase (Decrease) in Other Accounts Payable Other accounts payable Increase (Decrease) in Other Current Assets Other current assets Increase (Decrease) in Accounts Receivable Accounts receivable, net Increase (Decrease) in Accrued Liabilities Accrued expenses Increase (Decrease) in Other Noncurrent Liabilities Other non-current liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Others, net Increase (Decrease) in Other Receivables Other receivables Increase (Decrease) in Postemployment Obligations Payment of severance benefits Increase Decrease In Contract with Customer Asset Unbilled Receivables Unbilled accounts receivable, net The increase (decrease) in contract with customer asset during the reporting period of the amount of revenue for work performed for which billing has not occurred, net of uncollectible accounts. Increase (Decrease) in Income Taxes Payable Accrued income taxes