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Benefit Plans Amounts Recognized in Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items] |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax | $ 41,862 |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax | (32,699) | $ (23,326) | $ (10,378)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | (576) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax | (430) |  |
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses | (22,188) |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax | (17,594) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax | 6,721 |  |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, after tax | 5,450 |  |
Defined Benefit Plans, Impact of FX on Current Year Change in OCI | 2,642 |  |
Defined Benefit Plans, Impact of FX on Current Year Change in OCI, net of tax | (2,108) | $ 3,522 | $ (12,092)
Defined Benefit Plan, Changes in OCI Arising During the Period | 28,461 |  |
Defined Benefit Plan, Changes in OCI Arising During the Period, net of tax | 22,233 |  |
Pension Plan [Member] | Foreign Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax | 36,692 |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | 0 |  |
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses | (20,505) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax | 6,721 |  |
Defined Benefit Plans, Impact of FX on Current Year Change in OCI | 2,642 |  |
Defined Benefit Plan, Changes in OCI Arising During the Period | 25,550 |  |
Pension Plan [Member] | UNITED STATES |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax | 5,299 |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | 0 |  |
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses | (2,374) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax | 0 |  |
Defined Benefit Plans, Impact of FX on Current Year Change in OCI | 0 |  |
Defined Benefit Plan, Changes in OCI Arising During the Period | 2,925 |  |
Other Postretirement Benefits Plan [Member] | UNITED STATES |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax | (129) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | (576) |  |
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses | 691 |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax | 0 |  |
Defined Benefit Plans, Impact of FX on Current Year Change in OCI | 0 |  |
Defined Benefit Plan, Changes in OCI Arising During the Period | $ (14) |  |

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