Pension Plans (Components of Pension Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0
Interest cost	295	295
Expected return on plan assets	(288)	(288)
Amortization of net loss (gain)	44	44
Net periodic pension cost	51	51
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	267	267
Expected return on plan assets	(288)	(288)
Amortization of net loss (gain)	180	180
Net periodic pension cost	159	159
SERP
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	28	28
Expected return on plan assets	0	0
Amortization of net loss (gain)	(136)	(136)
Net periodic pension cost	$ (108)	$ (108)