Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Components of net periodic benefit cost [Abstract]
Contribution made to pension and postretirement plans	$ 0
Pension Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	$ 0
Interest cost	302	223
Expected return on plan assets	(680)	(817)
Amortization of net gain	0	0
Amortization of prior service cost (credit)	0	0
Net periodic benefit	(378)	(594)
Other Postretirement Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	2	18
Interest cost	66	52
Expected return on plan assets	(289)	(333)
Amortization of net gain	(114)	(78)
Amortization of prior service cost (credit)	3	(280)
Net periodic benefit	$ (332)	$ (621)