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INCOME TAXES (Deferred Taxes) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
INCOME TAXES |  |  |
Income Tax Reconciliation Foreign Withholding Taxes | $ 0 | $ 0 | $ (4,424)
Deferred tax assets: |  |  |
Tax loss and credit carry-forwards | 56,076 | 64,712 |
Inventory | 2,525 | 3,442 |
Other accruals | 14,084 | 13,048 |
Employee benefits | 27,673 | 24,532 |
Pension obligations | 13,021 | 11,561 |
Other | 4,306 | 3,401 |
Deferred tax assets, gross | 117,685 | 120,696 |
Valuation allowance | (65,413) | (71,546) |
Deferred tax assets, net | 52,272 | 49,150 |
Deferred tax liabilities: |  |  |
Property, plant and equipment | 36,795 | 39,583 |
Intangible assets | 13,595 | 16,695 |
Inventory | 5,586 | 6,427 |
Pension obligations | 16,070 | 25,171 |
Other | 10,009 | 11,285 |
Deferred tax liabilities | 82,055 | 99,161 |
Total deferred taxes | (29,783) | $ (50,011) |
Tax loss carryforwards of certain subsidiaries that will expire in various years from 2020 through 2035 | 42,824 |  |
Tax loss carryforwards of certain subsidiaries for which there is no expiration date | 174,993 |  |
Foreign Withholding Taxes Liability | $ 1,786 |  |

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