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Retirement Benefits (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) person	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) person	Sep. 30, 2021 USD ($)
Postemployment Benefits [Abstract]
Service cost	$ 194	$ 220	$ 582	$ 660
Interest cost	263	236	789	708
Expected return on plan assets	(784)	(704)	(2,352)	(2,112)
Amortization of net loss	102	314	305	942
Net Periodic Benefit (Income) Expense	$ (225)	$ 66	$ (676)	$ 198
Number of active, vested, terminated and retired persons in the plan | person	346		346

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