Retirement Benefits (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023 USD ($) person	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) person	Jun. 30, 2022 USD ($)
Postemployment Benefits [Abstract]
Service cost	$ 124	$ 194	$ 248	$ 388
Interest cost	373	263	746	526
Expected return on plan assets	(663)	(784)	(1,326)	(1,568)
Amortization of net loss	98	101	196	203
Net Periodic Benefit Income	$ (68)	$ (226)	$ (136)	$ (451)
Number of active, vested, terminated and retired persons in the plan \| person	343		343

Number of Active, Vested Terminated and Retired Persons in Plan

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

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost recognized for passage of time related to 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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