Employee Benefit Plans (Pension and Other Postretirement Benefits) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Components of net periodic cost:
Interest cost	$ 83	$ 112	$ 248	$ 336
Expected return on plan assets	(237)	(203)	(646)	(611)
Net amortization and deferral	280	272	841	817
Net Periodic Pension Cost	$ 126	$ 181	$ 443	$ 542