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Net Periodic Benefit Cost (Narratives) (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | $ 0 | $ 2,722 |  |
Effect of dilutive employee stock options and other share-based awards | 0 |  | 0 |
Pension Plans, Defined Benefiit |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  |  | $ 2,722 |
Forecast [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  |  | $ 5,255

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