Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Components of Net Periodic Benefit Cost
Service Cost	$ 1,404	$ 1,254
Interest Cost	1,274	1,306
Net Loss	788	540
Net Periodic Pension Cost	$ 3,466	$ 3,100
Weighted Average Assumptions for Expense
Discount Rate	3.05%	2.80%
Rate of Compensation Increase	4.40%	4.40%