Pension and Other Postretirement Benefits - The Components of the Net Pension (Benefit) Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Employee Pension Plan [Member]
Interest cost	$ 138	$ 128	$ 414	$ 384
Amortization of actuarial (gain) loss	1	122	3	366
Expected return on plan assets	(257)	(274)	(772)	(822)
Net pension expense (benefit)	(118)	(24)	(355)	(72)
Directors' Plan [Member]
Service cost	3	4	9	12
Interest cost	11	12	34	36
Amortization of actuarial (gain) loss	(7)	(5)	(21)	(15)
Net pension expense (benefit)	7	11	22	33
Other Post Retirement Benefit Plan Defined Benefit [Member]
Service cost	67	73	201	219
Interest cost	70	58	209	174
Amortization of actuarial (gain) loss		8		24
Amortization of past service credit	(7)	(21)	(21)	(63)
Net pension expense (benefit)	$ 130	$ 118	$ 389	$ 354