Retirement Agreements And Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Retirement Benefits [Abstract]
Liability for employee benefits and other payments	$ 15,000		$ 15,000
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the year	0	$ 0
Interest cost on the projected benefit obligation	10	6
Amortization of unrecognized losses	(7)	0
Net periodic benefits costs	$ 3	$ 6

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Amount of liability, recognized in statement of financial position, for defined benefit pension plan. Excludes other postretirement benefit plan.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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