Employee Benefit Plans (Pension and Other Postretirement Benefits) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Components of net periodic cost:
Interest cost	$ 112	$ 174	$ 224	$ 348
Expected return on plan assets	(203)	(266)	(406)	(531)
Net amortization and deferral	272	285	544	569
Net Periodic Pension Cost	$ 181	$ 193	$ 362	$ 386