Components of Net Pension Benefit Loss/(Gain) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
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| Retirement Benefits [Abstract] | ||||
| Interest and service cost | $ 1,175 | $ 1,995 | $ 4,699 | $ 5,985 |
| Expected return on plan assets | (2,285) | (3,443) | (7,565) | (10,329) |
| Amortization of net loss | 1,110 | 826 | 2,866 | 2,478 |
| Pension settlement loss | 49,898 | 49,898 | ||
| Net periodic loss | $ 49,898 | $ (622) | $ 49,898 | $ (1,866) |
| X | ||||||||||
- Definition Defined Benefit Plan Interest and Service Cost No definition available.
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- Definition Defined Benefit Plan Pension Settlement Loss No definition available.
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- References No definition available.
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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