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INCOME TAXES (Deferred Taxes) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Income Tax Reconciliation Foreign Withholding Taxes | $ 0 | $ (4,424) | $ 6,667
Deferred tax assets: |  |  |
Tax loss and credit carry-forwards | 64,712 | 60,756 |
Inventory | 3,442 | 3,544 |
Other accruals | 13,048 | 13,172 |
Employee benefits | 24,532 | 22,963 |
Pension obligations | 11,561 | 12,122 |
Other | 3,401 | 3,739 |
Deferred tax assets, gross | 120,696 | 116,296 |
Valuation allowance | (71,546) | (69,400) |
Deferred tax assets, net | 49,150 | 46,896 |
Deferred tax liabilities: |  |  |
Property, plant and equipment | 39,583 | 28,606 |
Intangible assets | 16,695 | 10,950 |
Inventory | 6,427 | 4,814 |
Pension obligations | 25,171 | 19,346 |
Other | 11,285 | 8,770 |
Deferred tax liabilities | 99,161 | 72,486 |
Total deferred taxes | (50,011) | $ (25,590) |
Tax loss carryforwards of certain subsidiaries that will expire in various years from 2020 through 2035 | 51,129 |  |
Tax loss carryforwards of certain subsidiaries for which there is no expiration date | 213,724 |  |
Foreign Withholding Taxes Liability | $ 1,697 |  |

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