Benefit Plans (Changes in Benefit Obligation and Fair Value of Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Benefit Plans [Abstract]
Benefit obligation at beginning of year	$ 6,925	$ 6,695
Interest cost	241	262
Actuarial (gain) loss	(567)	603
Benefits paid	(466)	(635)
Benefit obligation at end of year	6,133	6,925
Fair value of assets at beginning of year	4,960	4,887
Actual return on plan assets	(226)	575
Employer contribution	267	211
Benefits paid	(466)	(635)
Estimated expenses	(78)	(78)
Fair value of assets at end of year	$ 4,457	$ 4,960