Statement [Table] Entity Addresses, Address Type [Axis] Business Contact [Member] Statement [Line Items] Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Document Type Document Registration Statement Document Annual Report Document Transition Report Document Shell Company Report Document Period End Date Entity File Number Contact Personnel Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address Country Entity Address, Postal Zip Code City Area Code Local Phone Number Contact Personnel Fax Number Contact Personnel Email Address Title of 12(b) Security Trading Symbol Name of Exchange on which Security is Registered Security 12g Title Security Reporting Obligation Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Common Stock, Shares Outstanding Statement of Financial Position [Abstract] ASSETS CURRENT ASSETS Cash and cash equivalents CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD CASH AND CASH EQUIVALENTS - END OF PERIOD Short-term interest-bearing deposits Marketable securities Trade accounts receivables Inventories Inventory, net, total Inventory, Net Other current assets Other current assets Total current assets Assets, Current LONG-TERM INVESTMENTS Long-term investments, total PROPERTY AND EQUIPMENT, NET Property and equipment, net Long-Lived Assets INTANGIBLE ASSETS, NET Net GOODWILL DEFERRED TAX AND OTHER LONG-TERM ASSETS, NET Deferred tax and other assets, net Deferred tax and other assets, net. TOTAL ASSETS Assets LIABILITIES AND SHAREHOLDERS' EQUITY CURRENT LIABILITIES Current maturities of long-term debt Trade accounts payables Deferred revenue and customers' advances Employee related liabilities Liability, Pension and Other Postretirement and Postemployment Benefits, Current Other current liabilities Total other current liabilities Total current liabilities Liabilities, Current Debentures LONG-TERM DEBT Total LONG-TERM CUSTOMERS' ADVANCES EMPLOYEE RELATED LIABILITIES Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent DEFERRED TAX AND OTHER LONG-TERM LIABILITIES Deferred tax and other long-term liabilities. OTHER LONG-TERM LIABILITIES TOTAL LIABILITIES Liabilities Ordinary shares of NIS 15 par value: 150,000 authorized as of December 31, 2020 and 2019 108,010 and 107,923 issued and outstanding, respectively, as of December 31, 2020 106,895 and 106,808 issued and outstanding, respectively, as of December 31, 2019 Additional paid-in capital Capital notes Cumulative stock based compensation Amount of accumulated share-based compensation. Accumulated other comprehensive loss Accumulated deficit SHAREHOLDERS' EQUITY, before treasury stock Stockholders' Equity before Treasury Stock Treasury stock, at cost - 87 shares Treasury Stock, Value THE COMPANY'S SHAREHOLDERS' EQUITY Stockholders' Equity Attributable to Parent Non-controlling interest TOTAL SHAREHOLDERS' EQUITY BALANCE BALANCE Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity Amortized cost Amortized cost Marketable securities allowance for credit losses Marketable securities allowance for credit losses. Ordinary shares, par value Ordinary shares, authorized Ordinary shares, issued Ordinary shares, outstanding Treasury stock, shares Income Statement [Abstract] REVENUES Revenues net witholding tax COST OF REVENUES GROSS PROFIT Gross Profit OPERATING COSTS AND EXPENSES: Research and development Marketing, general and administrative TOTAL OPERATING COSTS AND EXPENSES Operating Expenses OPERATING PROFIT Operating Income (Loss) FINANCING INCOME (EXPENSE), NET Financing Other financing expense, net. Periodic Payment Two [Member] OTHER INCOME (EXPENSE), NET PROFIT BEFORE INCOME TAX Total profit before taxes INCOME TAX EXPENSE, NET Income tax expense Income Tax Expense (Benefit) NET PROFIT Net profit Profit Net loss (income) attributable to non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest NET PROFIT ATTRIBUTABLE TO THE COMPANY Net Income (Loss) Attributable to Parent BASIC EARNINGS PER ORDINARY SHARE: Earnings per share Weighted average number of ordinary shares outstanding DILUTED EARNINGS PER ORDINARY SHARE: Earnings per share Earnings Per Share, Diluted Net profit used for diluted earnings per share Weighted average number of ordinary shares outstanding used for diluted earnings per share Statement of Comprehensive Income [Abstract] Other comprehensive income, net of tax: Other comprehensive income: Foreign currency translation adjustment Change in employees plan assets and benefit obligations, net of taxes Change in employees plan assets and benefit obligations Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Unrealized gain (loss) on derivatives Unrealized loss on derivatives Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss (income) attributable to non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to the Company Comprehensive income Equity Components [Axis] Ordinary shares [Member] Additional paid-in capital [Member] Capital notes [Member] Capital Notes [Member] Unearned compensation [Member] Accumulated other comprehensive income (loss) [Member] Accumulated Other Comprehensive Income Excluding Foreign Currency [Member] Foreign currency translation adjustments [Member] Accumulated deficit [Member] Treasury stock [Member] Comprehensive income [Member] Noncontrolling interest [Member] BALANCE, SHARES BALANCE, SHARES Shares, Outstanding Establishment of a subsidiary Issuance of shares Issuance of shares, shares Conversion of debentures and exercise of warrants into share capital Conversion of debentures and exercise of warrants into share capital, shares Conversion of notes into share capital Conversion of notes into share capital, shares Number of shares issued from conversion Exercise of options Exercise of options, shares Exercise of options and RSUs Exercise of options and Restricted Stock Units. Exercise of options and RSUs, shares Number of shares issued from exercise of options and Restricted Stock Units. Beneficial conversion feature Capital notes converted into share capital Capital notes converted into share capital, shares Employee stock-based compensation Employee stock-based compensation, shares Shares of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. Cumulative effect upon adoption of ASC 326 - see note 2X Cumulative effect upon adoption of ASC 326 - see note 2F. Stock-based compensation related to the Facility Agreement with the Banks This element represents the amount of recognized equity-based compensation related to the Facility Agreement with the banks during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Tax benefit relating to stock based compensation Dividend to Panasonic Dividends Foreign currency translation adjustments OUTSTANDING SHARES, NET OF TREASURY STOCK AS OF DECEMBER 31, 2020 Common shares outstanding, net of treasury stock. Conversion of Notes to Share Capital Statement of Cash Flows [Abstract] CASH FLOWS - OPERATING ACTIVITIES Adjustments to reconcile net profit for the period to net cash provided by operating activities: Income and expense items not involving cash flows: Depreciation and amortization Effect of exchange rate differences on debentures Foreign Currency Transaction Gain (Loss), before Tax Other expense (income), net Other Noncash Income (Expense) Changes in assets and liabilities: Trade accounts receivable Increase (Decrease) in Accounts Receivable Other current assets Increase (Decrease) in Prepaid Expense and Other Assets Inventories Increase (Decrease) in Inventories Trade accounts payable Deferred revenue and customers' advances Increase (Decrease) in Deferred Revenue Employee related liabilities and other current liabilities Long-term employee related liabilities Deferred tax, net and other long-term liabilities Other long-term liabilities Other Long Term Liabilities. Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS - INVESTING ACTIVITIES Investments in property and equipment Payments to Acquire Property, Plant, and Equipment Proceeds related to sale and disposal of property and equipment Investment grants received Proceeds from governmental, corporate, or foundation grants. Investments in other assets Payments to Acquire Intangible Assets Deposits and marketable securities, net Investments of funds in marketable securities held for sale and ST interest bearing deposits with duration over 3 months and less than one year. Gains Losses On Business Acquisition Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS - FINANCING ACTIVITIES Exercise of options, net Proceeds From Exercise Of Options. Proceeds from loans Proceeds from non-convertible debentures Loans repayment Repayments of Bank Debt Principal payments on account of capital lease obligation Lease Obligation Incurred Debentures repayment The cash outflow to settle a debentures during the year. RepaymentsOfDebentures Dividend paid to Panasonic Payments of Ordinary Dividends, Noncontrolling Interest Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities EFFECT OF FOREIGN CURRENCY EXCHANGE RATE CHANGE