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Defined Benefit Post-Retirement Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Defined Benefit Post-Retirement Plans [Abstract]        
Employer contributions $ 0 $ 0 $ 0 $ 0
Pension Benefits [Member]        
Components of net periodic (benefit) cost [Abstract]        
Service cost 506 517 1,574 1,486
Interest cost 690 679 2,078 2,034
Expected return on plan assets (2,220) (2,197) (6,676) (6,602)
Net amortization 183 331 553 957
Net periodic pension (benefit) cost (841) (670) (2,471) (2,125)
Other Benefits [Member]        
Components of net periodic (benefit) cost [Abstract]        
Service cost 2 2 6 6
Interest cost 42 45 124 135
Expected return on plan assets 0 0 0 0
Net amortization 2 13 4 39
Net periodic pension (benefit) cost $ 46 $ 60 $ 134 $ 180