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Benefit Plans - Contributions to Pension and Other Postretirement Benefit Plans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Jul. 01, 2019
Qualified Plan (ERP)
Benefit Plans
Benefit accruals for the company's employees	$ 0
Pension Plan
Benefit Plans
Benefit accruals for the company's employees	(77,439)	$ (97,784)
Pension Plan | Qualified Plan (ERP)
Benefit Plans
Expected contributions in 2023	0
Pension Plan | Nonqualified Plan
Benefit Plans
Expected contributions in 2023	200
SERP and Directors' Plan
Benefit Plans
Benefit accruals for the company's employees			$ 0
Expected contributions in 2023	0
Other Benefits | Nonqualified Plan
Benefit Plans
Expected contributions in 2023	$ 1,200

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next 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 (g)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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