Pension and Postretirement Benefits - Composition of Net Periodic Pension Plan and Postretirement Plan Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	139	140	417	421
Expected return on plan assets	(253)	(241)	(760)	(724)
Amortization of prior service credits	0	0	0	0
Amortization of net losses	39	57	116	170
Net periodic benefit plan (benefit) cost	(75)	(44)	(227)	(133)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	2	3	5	6
Expected return on plan assets	0	0	0	0
Amortization of prior service credits	(1)	(1)	(3)	(3)
Amortization of net losses	(1)	(1)	(3)	(3)
Net periodic benefit plan (benefit) cost	$ 0	$ 1	$ (1)	$ 0