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Rationalization Charges - Narrative (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | $ 42,295 | $ 43,713
Other Restructuring [Member] | Rationalization Plan [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Remaining expenses | 1,900 |
Remaining cash expenditure | 3,400 |
Annually over the next twenty years [Member] | Central States Pension Plan withdrawal [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Remaining cash expenditure | 3,100 |
Remaining interest accretion expense | 1,100 |
Accrued Liabilities |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 4,500 |
Other Liabilities |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | $ 37,800 |

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