Employee Benefit Plans - Benefits Expected to be Paid Next Five Years (Details) $ in Thousands	Dec. 31, 2020 USD ($)
DB Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2021	$ 4,290
2022	4,206
2023	4,393
2024	4,444
2025	4,625
2026-2030	23,920
Total	45,878
Life and Healthcare Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2021	472
2022	452
2023	446
2024	468
2025	463
2026-2030	2,341
Total	4,642
SERP Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2021	719
2022	773
2023	880
2024	863
2025	860
2026-2030	6,130
Total	$ 10,225

Defined Benefit Plan, Expected Future Benefit Payment

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- Definition

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=118255775&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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