Retirement Plans - Expected Annual Benefit Payments (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Pension plan
Expected annual benefit payments based on actuarial estimates:
2021	$ 299
2022	304
2023	362
2024	372
2025	471
Thereafter	2,570
SERP liability adjustments
Expected annual benefit payments based on actuarial estimates:
2021	527
2022	522
2023	516
2024	483
2025	557
Thereafter	$ 2,628

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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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- Definition

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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