Employee Benefit Plans (Accumulated Other Comprehensive Income Next Fixal Year) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract]
Prior service cost	$ 4
Actuarial loss (gain)	1,961
Pension Benefits
Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract]
Prior service cost	0
Actuarial loss (gain)	2,001
Other Postretirement Benefits
Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract]
Prior service cost	4
Actuarial loss (gain)	$ (40)