Pension and Other Postretirement Benefit Plans - Benefit Payments Expected to be Paid (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Retirement Plan [Member]
2023	$ 1,281
2024	1,260
2025	1,249
2026	1,246
2027	1,244
2028 - 2032	6,163
Other Postretirement Benefits Plan [Member]
2023	259
2024	311
2025	347
2026	372
2027	417
2028 - 2032	2,629
Directors' Plan [Member]
2023	208
2024	172
2025	144
2026	144
2027	144
2028 - 2032	$ 544

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

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 https://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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