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Pension Plans (Components of Pension Cost) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 0 $ 0
Interest cost 295 345
Expected return on plan assets (288) (325)
Amortization of net (gain)/loss 44 171
Net periodic pension cost 51 191
Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 0
Interest cost 267 306
Expected return on plan assets (288) (325)
Amortization of net (gain)/loss 180 210
Net periodic pension cost 159 191
SERP    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 0
Interest cost 28 39
Expected return on plan assets 0 0
Amortization of net (gain)/loss (136) (39)
Net periodic pension cost $ (108) $ 0