Benefit Plans - Defined Benefit Plans - Components of Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Supplemental Retirement Plan
Components of net periodic benefit cost:
Service cost	$ 87	$ 120	$ 174	$ 240
Interest cost	216	190	432	380
Amortization of prior service cost		75		100
Amortization of net actuarial loss	114	136	228	272
Net periodic benefit cost	417	521	834	992
Defined Benefit Plan, Assets for Plan Benefits	0		0
Split-Dollar Life Insurance Benefit Plan
Components of net periodic benefit cost:
Amortization of prior transition obligation and actuarial losses	(10)	(1)	(21)	(2)
Interest cost	61	55	123	110	$ 219
Net periodic benefit cost	$ 51	$ 54	$ 102	$ 108