Retirement Plans and Other Post-Retirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	179	273	414	523
Amortization of prior service cost (credit)	11	12	22	24
Amortization of actuarial loss	164	199	331	398
Total net periodic benefit expense (income)	354	484	767	945
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	7	0	14
Interest cost	32	32	65	64
Amortization of prior service cost (credit)	26	(59)	52	(117)
Amortization of actuarial loss	0	12	0	24
Total net periodic benefit expense (income)	$ 58	$ (8)	$ 117	$ (15)