Employee Benefit Plans (Pension and Other Postretirement Benefits) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Components of net periodic cost:
Interest cost	$ 140	$ 147	$ 280	$ 295
Expected return on plan assets	(214)	(270)	(428)	(540)
Net amortization and deferral	229	218	459	436
Settlement	0	151	0	151
Net Periodic Pension Cost	$ 155	$ 246	$ 311	$ 342