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Income Taxes Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating Loss Carryforwards [Line Items] |  |  |
Unrecognized tax benefits | $ 958 | $ 8,590 | $ 8,250
Unrecognized Tax Benefits | 7,200 |  |
Income tax valuation allowance | 0 | 0 |
Unremitted earnings | 62,000 |  |
Taxes withhelld on unremitted earnings | 18,000 |  |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 333 | $ 1,367 |
Operating Loss Carryforwards, Offset Future Taxable Income, Near Future | 279,000 |  |
Operating Loss Carryforwards, Offset Future Taxable Income, Indefinitely | 52,000 |  |
United States |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating Loss Carryforwards | $ 331,000 |  |

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