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TAXES ON INCOME (Narrative) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($) installment | Dec. 31, 2018 USD ($) | Dec. 31, 2017
Income Tax Examination [Line Items] |  |  |
Tax rate | 23.00% | 23.00% | 24.00%
Federal and state income taxes rate | 25.00% |  |
Tax loss carry-forwards | $ 151,959 |  |
Tax loss carry-forwards that have no expiration date | 73,011 |  |
Accrued interest related to income tax uncertainties | $ 3,889 | $ 501 |
Encouragement of Industry |  |  |
Income Tax Examination [Line Items] |  |  |
Number of annual installments for deduction of public offering expenses | installment | 3 |  |
Amortization period of purchased know-how and patents | 8 years |  |
Non-Israeli Subsidiaries |  |  |
Income Tax Examination [Line Items] |  |  |
Undistributed earnings | $ 788,728 |  |
Unrecognized deferred tax liability | $ 115,505 |  |
From 2015 through 2016 | The election |  |  |
Income Tax Examination [Line Items] |  |  |
Tax rate | 16.00% |  |
2017 and thereafter | The election |  |  |
Income Tax Examination [Line Items] |  |  |
Tax rate | 12.00% |  |
2019 | Income not eligible for Preferred Enterprise benefits |  |  |
Income Tax Examination [Line Items] |  |  |
Tax rate | 23.00% |  |
2018 | Income not eligible for Preferred Enterprise benefits |  |  |
Income Tax Examination [Line Items] |  |  |
Tax rate |  |  | 23.00%
2017 | Income not eligible for Preferred Enterprise benefits |  |  |
Income Tax Examination [Line Items] |  |  |
Tax rate |  |  | 24.00%
2012 |  |  |
Income Tax Examination [Line Items] |  |  |
Tax rate | 20.00% |  |

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