Retirement Plans and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 140	$ 164	$ 419	$ 425
Interest cost	393	366	1,180	1,073
Expected loss on plan assets	(940)	(946)	(2,818)	(2,739)
Amortization of net actuarial loss	205	318	614	952
Net periodic benefit (income) cost	(202)	(98)	(605)	(289)
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	30	36	92	107
Interest cost	25	21	73	64
Expected loss on plan assets	0	0	0	0
Amortization of net actuarial loss	14	11	41	35
Net periodic benefit (income) cost	$ 69	$ 68	$ 206	$ 206