Employee Benefit Plans (Summary of Estimated Future Benefit Payments) (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Defined benefit pension plan
Defined Benefit Plan Disclosure [Line Items]
2022	$ 11,245
2023	11,415
2024	11,476
2025	11,181
2026	10,892
Next 5 years	46,338
Total	102,547
Other postretirement benefits plan
Defined Benefit Plan Disclosure [Line Items]
2022	5,968
2023	5,884
2024	5,617
2025	5,458
2026	5,275
Next 5 years	23,632
Total	$ 51,834

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Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

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