Amendment Flag Current Fiscal Year End Date Document Period End Date Entity [Domain] Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Legal Entity [Axis] Document Type AOCI Including Portion Attributable to Noncontrolling Interest [Member] AOCI Attributable to Noncontrolling Interest [Member] Award Type [Axis] Accounts receivable, net of allowance of $2,449 in 2018 and $2,319 in 2017 Accounts Receivable, Net, Current Accounts payable Accrued liabilities Accrued Liabilities, Current Accumulated Other Comprehensive Income (Loss) [Table] Amortization of Cash Flows Hedge [Member] Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] Amortization of Cash Flows Hedge [Member] Amortization of Cash Flows Hedge [Member] Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated other comprehensive income Foreign Currency Translation Adjustments [Member] Foreign Currency Translation Adjustments [Member] Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member] CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME BY COMPONENT [Abstract] Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Foreign Currency Translation Adjustments [Member] Accumulated Foreign Currency Adjustment Attributable to Parent [Member] AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Member] Additional Paid-in Capital [Member] Additional paid-in capital Adjustments to reconcile net income to net cash provided by operating activities: Share-based compensation expense Share-based compensation costs incurred Accounts receivable, allowance Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Total potentially dilutive shares excluded (in shares) Total assets ASSETS Assets [Abstract] Total assets Assets Current assets: Total current assets Assets, Current Buildings and Improvements [Member] Building and Building Improvements [Member] BASIS OF FINANCIAL STATEMENT PRESENTATION Business Description and Basis of Presentation [Text Block] Accrual for property, plant and equipment purchased during the period Machinery and equipment Capital Leased Assets, Gross Amount payable through the end of lease term Capital leased assets, net Capital Leases, Balance Sheet, Assets by Major Class, Net Equipment under capital leases included in property, plant and equipment [Abstract] Accumulated amortization Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation Carrying Value [Member] Cash and cash equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Class of Stock [Line Items] Variable Interest Entity, Classification [Domain] DNP [Member] Co-venturer [Member] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Commitments and contingencies COMMITMENTS AND CONTINGENCIES [Abstract] Common Stock [Member] Common stock, shares authorized (in shares) Common stock, shares issued (in shares) Common stock, par value (in dollars per share) Common stock, $0.01 par value, 150,000 shares authorized, 69,443 shares issued and outstanding at April 29, 2018 and 68,666 shares issued and outstanding at October 29, 2017 Common Stock, Value, Issued Common stock, shares outstanding (in shares) Less: comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to Photronics, Inc. shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Consolidated Entities [Domain] Consolidated Entities [Axis] Carrying Amount [Member] Construction in Progress [Member] Convertible senior notes Convertible debt Convertible Notes [Member] Depreciation and amortization expense Cost of goods sold Cost of Goods Sold Credit Facility [Domain] Credit Facility [Axis] Debt Instrument [Axis] Conversion price per share (in dollars per share) Repayment period of debt Debt Instrument, Term LONG-TERM BORROWINGS [Abstract] Maturity date of debt Interest rate percentage Interest rate Debt Instrument, Interest Rate, Effective Percentage Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Number of shares each note is convertible to (in shares) Debt Instrument, Convertible, Number of Equity Instruments Face amount of debt Debt Instrument, Name [Domain] Frequency of periodic payment Periodic payments Amount of reasonably possible decrease in uncertain tax positions Decrease in Unrecognized Tax Benefits is Reasonably Possible Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Depreciation and amortization RECENT ACCOUNTING PRONOUNCEMENTS Description of New Accounting Pronouncements Not yet Adopted [Text Block] Effect of dilutive securities [Abstract] SHARE-BASED COMPENSATION [Abstract] SHARE-BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Subsidiary dividend payable Dividends Subsidiary dividend payable Europe [Member] Diluted (in dollars per share) Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted EARNINGS PER SHARE Earnings Per Share [Text Block] Calculation of basic and diluted earnings per share [Abstract] Earnings Per Share, Basic and Diluted [Abstract] Basic (in dollars per share) Basic earnings per share (in dollars per share) Earnings per share: EARNINGS PER SHARE [Abstract] Effect of exchange rate changes on cash and cash equivalents U.S. statutory rate Effective tax rate Compensation cost not yet recognized related to unvested restricted stock awards Unrecognized compensation cost related to unvested option awards Income tax benefits realized from stock option exercises Stock Options [Member] Employee Stock Option [Member] Share-based compensation cost capitalized Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Period for recognition of compensation cost not yet recognized CHANGES IN EQUITY [Abstract] Equity Component [Domain] Photronics Interest [Member] Fair Value [Member] Fair Value Financial Instruments Fair Value Measurement, Policy [Policy Text Block] Measurement Basis [Axis] Measurement Frequency [Axis] Fair Value, Measurements, Nonrecurring [Member] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Measurement Frequency [Domain] FAIR VALUE MEASUREMENTS [Abstract] Fair Value, Measurements, Recurring [Member] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value Measurement [Domain] Fair and carrying values of the Company's convertible senior notes [Abstract] Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Foreign Tax Authority [Member] Foreign Tax Authority [Member] Furniture, Fixtures and Office Equipment [Member] Furniture and Fixtures [Member] Gross profit Gross Profit Foreign income tax expense (benefit) Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability INCOME TAXES [Abstract] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority [Axis] Condensed Consolidated Statements of Income (unaudited) [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Income Tax Authority [Domain] Income tax holiday termination date Income Tax Holiday [Table] Income tax provision Income Tax Expense (Benefit) Per share effect of income tax holiday (in dollars per share) Dollar effect of income tax holiday Income Tax Holiday [Line Items] Income Tax Holiday [Line Items] Income Taxes Accounts payable, accrued liabilities, and other Other current assets Increase (Decrease) in Other Current Assets Accounts receivable Increase (Decrease) in Accounts Receivable Changes in assets and liabilities: Inventories Increase (Decrease) in Inventories Share-based payment awards (in shares) Convertible notes (in shares) Intangible assets, net Interest expense Interest and Debt Expense Interest expense on convertible notes, net of tax INVENTORIES Inventory Disclosure [Text Block] Inventories Inventory Inventory, Net Finished goods INVENTORIES [Abstract] Raw materials Work in process Inventories Long-term Debt, Type [Domain] Long-term Debt, Type [Axis] Land [Member] Leasehold Improvements [Member] Total liabilities and equity Liabilities and Equity Total liabilities Liabilities LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Total liabilities Total current liabilities Liabilities, Current Current liabilities: Amount outstanding under credit facility Current borrowing capacity Maximum borrowing capacity Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Long-term debt and capital lease obligations Long-term Debt and Capital Lease Obligations, Including Current Maturities Long-term borrowings [Abstract] Long-term Debt and Capital Lease Obligations, Including Current Maturities [Abstract] Long-term borrowings Long-term debt and capital lease obligations non current LONG-TERM BORROWINGS Long-term Debt [Text Block] Current portion of long-term borrowings Current portion Machinery and Equipment [Member] Machinery and Equipment [Member] Maximum [Member] Minimum [Member] Noncontrolling interests Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Earnings used for diluted earnings per share Net Income (Loss) Attributable to Parent, Diluted Cash flows from financing activities: Cash flows from investing activities: Cash flows from operating activities: Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Net income attributable to Photronics, Inc. shareholders Net income attributable to Photronics, Inc. shareholders Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Recent Accounting Pronouncements RECENT ACCOUNTING PRONOUNCEMENTS [Abstract] Equipment acquired in exchange for product Noncash or Part Noncash Acquisition, Fixed Assets Acquired Other income (expense): Non-controlling Interests [Member] Operating expenses: Operating income Operating Income (Loss) Total operating expenses Operating Expenses PDMCX JOINT VENTURE [Abstract] Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amortization of cash flow hedge Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Net other comprehensive income (loss ) Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME BY COMPONENT Other assets Other Assets, Noncurrent Other current assets Other Assets, Current Other comprehensive income (loss), net of tax of $0: Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income, tax Other comprehensive income, tax Other liabilities Interest income and other income (expense), net Less: other comprehensive (income) loss attributable to noncontrolling interests Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Other Payments for (Proceeds from) Other Investing Activities Acquisition of business Payments to Acquire Businesses, Gross Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Portion at Fair Value Measurement [Member] Preferred stock, par value (in dollars per share) Preferred stock, $0.01 par value, 2,000 shares authorized, none issued and outstanding Preferred stock, shares issued (in shares) Preferred stock, shares outstanding (in shares) Preferred stock, shares authorized (in shares) Prepaid expenses Other Proceeds from (Payments for) Other Financing Activities Contribution from noncontrolling interest Proceeds from sale of investment Cash received from option exercises Proceeds from share-based arrangements Net income Net income Net income (loss) Property, plant and equipment PROPERTY, PLANT AND EQUIPMENT [Abstract] Property, plant and equipment, net Property, plant and equipment, net Property, plant and equipment, gross PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Property, plant and equipment [Abstract] Property, Plant and Equipment, Net, by Type [Abstract] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Outstanding commitments for capital expenditure Range [Domain] Range [Axis] Amounts reclassified from accumulated other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Repayments of long-term borrowings Repayments of Debt and Capital Lease Obligations Research and development Research and Development Expense Restricted Stock [Member] Retained earnings Retained Earnings [Member] Credit Facility [Member] Contractual term Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Expected term Weighted average remaining contractual life, Exercisable at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate intrinsic value, Exercisable at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Weighted average remaining contractual life, Outstanding at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Revenue Scenario, Unspecified [Domain] Plan [Member] Information on outstanding and exercisable option awards Share-based Compensation, Stock Options, Activity [Table Text Block] Calculation of basic and diluted earnings per share Consolidated changes in equity Components of inventory Equipment under capital leases included in property, plant and equipment Schedule of Capital Leased Assets [Table Text Block] Weighted-average inputs and risk-free rate of return ranges used to calculate the grant date fair value of options Fair and carrying values of convertible senior notes Long-term borrowings Schedule of Long-term Debt Instruments [Table Text Block] Schedule of changes in accumulated other comprehensive income by component Outstanding securities excluded from the calculation of diluted earnings or loss per share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Property, Plant and Equipment [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Carrying amounts of assets and liabilities along with exposure to loss related to assets and liabilities Schedule of Variable Interest Entities [Table] Schedule of Stock by Class [Table] Geographical [Domain] Selling, general and administrative Selling, General and Administrative Expense Restricted Stock [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Award vesting period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Weighted Average Exercise Price [Abstract] Share options granted (in shares) Exercisable at end of period (in shares) Dividend yield Weighted average grant date fair value of restricted stock awards (in dollars per share) Restricted stock awards granted (in shares) Volatility Stock options, additional disclosures [Abstract] Risk free rate of return Weighted-average inputs and risk-free rate of return ranges used to calculate the grant date fair value of options [Abstract] Number of shares of restricted stock outstanding (in shares) Weighted average exercise price, Exercisable at end of period (in dollars per share) Maximum number of shares of common stock that may be issued (in shares) Aggregate intrinsic value, Outstanding at end of period Weighted-average grant date fair value of options granted (in dollars per share) Weighted average exercise price, Outstanding at end of period (in dollars per share) Date and terms of plan modification Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Description and Terms Outstanding at end of period (in shares) Outstanding and exercisable option awards [Roll Forward] Equity Award [Domain] Share-based Compensation Accounting Ending balance (in shares) Beginning balance (in shares) Shares, Outstanding Geographical [Axis] Condensed Consolidated Statements of Cash Flows (unaudited) [Abstract] Consolidated Statements of Comprehensive Income (unaudited) [Abstract] Condensed Consolidated Balance Sheets (unaudited) [Abstract] Scenario [Axis] Equity Components [Axis] Restricted stock awards vesting and expense Restricted stock awards vesting and expense (in shares) Sale of common stock through employee stock option and purchase plans (in shares) Share-Based Payment Awards [Member] Stock Compensation Plan [Member] Sale of common stock through employee stock option and purchase plans Total equity Ending balance Beginning balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total Photronics, Inc. shareholders' equity Ending Balance Beginning Balance Stockholders' Equity Attributable to Parent Equity: CHANGES IN EQUITY Supplemental disclosure information: Tax Credit Carryforward, Name [Domain] Tax credit carryforward, amount Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Interest and penalties accrued related to uncertain tax positions Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Unrecognized tax benefits Valuation allowance change Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Primary Beneficiary [Member] Non-current liabilities Current assets Maximum loss exposure, amount Carrying amounts of assets and liabilities along with exposure to loss related to assets and liabilities [Abstract] Current liabilities Financial or other support, amount Non-current assets Initial consolidation, gain (loss) Consolidation liabilities, recourse Total assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Variable Interest Entities [Axis] Ownership percentage Operating loss Net assets Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net Total liabilities Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Methodology use for determining whether enterprise is primary beneficiary Variable Interest Entity [Line Items] PDMCX JOINT VENTURE Variable Interest Entity Disclosure [Text Block] Not Primary Beneficiary [Member] Effect of dilutive securities [Abstract] Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Potentially dilutive common shares (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Basic (in shares) Weighted-average common shares used for basic earnings per share (in shares) Diluted (in shares) Weighted-average common shares used for diluted earnings per share (in shares) Weighted-average number of common shares outstanding: Weighted-average common shares computations [Abstract] China under Construction [Member] Korea [Member] Taiwan [Member] United States [Member] Stock options activity [Abstract] Share based Compensation Arrangement by Share based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Weighted-Average Remaining Contractual Life [Abstract] Share based Compensation Arrangement by Share based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Aggregate Intrinsic Value [Abstract] Net of tax amount of the appreciation (loss) for other adjustments. Other Comprehensive Income (Loss), Other Adjustments, Net of Tax Other Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder. Convertible Senior Notes Due On April2019 [Member] 3.25% Convertible Senior Notes due 2019 [Member] 3.25% Convertible Senior Notes due on April 2019 [Member] Refers to minimum number of business days for obtaining required approvals and clearance for exiting party from the agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Number of Business Days for Obtaining Required Approvals and Clearance for Exiting Party Number of business days for obtaining required approvals and clearance for exiting party Amount of future support planned to be provided to variable interest entity. Variable Interest Entity Future Support To Be Provided Future support to be provided Refer to initial term of agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Variable Interest Entity, Initial Term of Agreement Initial term of agreement Refers to Number of consecutive months for Trigger of option to purchase, or put, their interest from, or to, other party if ownership interest fall below 20%, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Trigger Period for Option to Purchase, or Put, Their Interest from, or to, Other Party if Ownership Interest Fall Below 20% Trigger period for option to purchase, or put, their interest from, or to, other party if ownership interest falls below 20% Refers to wholly owned Singapore subsidiary. Photronics Singapore Pte, Ltd [Member] This line item represents the face amount of each note converted or convertible to common stock. Face Amount Of Each Note Converted Or Convertible Face amount of each note converted Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder. Convertible senior notes due on April 2016 [Member] 3.25% Convertible Senior Notes due in April 2016 [Member] A borrowing recorded for a lease meeting the criteria for capitalization. A lease is defined as an agreement conveying the right to use property, plant, or equipment (land or depreciable assets) usually for a stated period of time. Capital lease obligation payable through 2018 [Member] 2.77% Capital Lease Obligation Payable through July 2018 [Member] Disclosure of information about income taxes. Income Tax Disclosure [Table] Tax credit carryforwards relating to alternate minimum tax. Alternate Minimum Tax Credit Carryforward [Member] Federal Alternate Minimum [Member] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Income Tax Disclosure [Line Items] Refers to credit carryforwards refund period. Credit Carryforwards Refund Period Credit carryforwards refund period Amount of reasonable estimate for valuation allowance for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in tax rate, deferred tax asset, valuation allowance Change in tax rate, deferred tax asset, valuation allowance Amount of reasonable estimate for income tax expense from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense Estimated deemed repatriation transition tax Percentage of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to increase (decrease) from transition tax on accumulated earnings not in cash of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017. Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Transition Tax on Accumulated Foreign Earnings Not in Cash, Percent Toll charge rate on accumulated earnings not in cash Percentage of foreign federal statutory tax rate applicable to pretax income (loss). Effective Income Tax Rate Reconciliation, at Foreign Statutory Income Tax Rate, Percent Foreign statutory rate Amount of reasonable estimate for income tax expense (benefit) for remeasurement of deferred tax from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) Provisional income tax expense (benefit) Percentage of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to increase (decrease) from transition tax on accumulated earnings in cash of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017. Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Transition Tax on Accumulated Foreign Earnings in Cash, Percent Toll charge rate on accumulated earnings in cash Refers to term of tax year holidays. Term of tax year holidays Term of tax year holidays Designated tax department of the government of Taiwan. Taiwan Agency of the Ministry of Finance [Member] Amount of reasonable estimate for income tax expense for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Change in tax rate, deferred tax asset, provisional income tax expense Amount of reasonable estimate for valuation allowance from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Valuation Allowance Estimated deemed repatriation transition tax, valuation allowance Changes to accumulated comprehensive income resulting from other. Accumulated Other Comprehensive Income Other [Member] Other [Member] Changes to accumulated other comprehensive income attributable to non-controlling interest resulting from other. Accumulated Other Comprehensive Income Attributable to Noncontrolling Interest Other [Member] Other [Member] Changes to accumulated other comprehensive income including portion attributable to non-controlling interest resulting from other. Accumulated Other Comprehensive Income Including Portion Attributable to Noncontrolling Interest Other [Member] Other [Member] BASIS OF FINANCIAL STATEMENT PRESENTATION [Abstract] Document and Entity Information [Abstract] Describes the operating facilities of the reporting entity by geographical region. Manufacturing Facilities by Geographical Region [Table] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Manufacturing Facilities By Geographical Region [Line Items] Manufacturing Facilities By Geographical Region [Line Items] This line item represents the number of manufacturing facilities of the entity. Number of manufacturing facilities Number of manufacturing facilities Latest date at which production is estimated to commence at facilities. Estimated production start-by date