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Income Taxes (Details Narrative 3) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Income tax contingencies |  |  |  |
Unrecognized tax benefits | $ 134,044 | $ 115,653 | $ 23,482 | $ 22,652
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit | 110,900 |  |  |
Long-term deferred tax assets |  |  |  |
Income tax contingencies |  |  |  |
Unrecognized tax benefits | 23,600 | 22,800 |  |
Other assets | Foreign tax authority | National Tax Services |  |  |  |
Income tax contingencies |  |  |  |
Unrecognized tax benefits | 109,000 | 91,000 |  |
Long-term income taxes payable |  |  |  |
Income tax contingencies |  |  |  |
Unrecognized tax benefits | $ 1,900 | $ 1,800 |  |

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