Pension Benefits and Other Postretirement Benefits (Components of Net Periodic Benefit (Credit) Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	191	182	573	550
Expected return of plan assets	(340)	(389)	(1,020)	(1,169)
Amortization of prior service credit	0	0	0	0
Amortization of net loss	111	95	333	291
Net periodic benefit (credit) cost	(38)	(112)	(114)	(328)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	16	30	46
Interest cost	8	7	24	19
Expected return of plan assets	0	0	0	0
Amortization of prior service credit	0	(25)	0	(73)
Amortization of net loss	0	0	0	0
Net periodic benefit (credit) cost	$ 18	$ (2)	$ 54	$ (8)