Goodwill and Other Intangibles (Schedule of Components of Goodwill and Other Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Goodwill and Intangible Assets [Line Items]
Goodwill, Gross	$ 19,728	$ 19,728
Accumulated Impairment Charges	(1,543)	(1,543)
Accumulated Amortization	(667)	(667)
Goodwill, Total	17,518	17,518
Other intangible assets, Amortizable, Gross Carrying Amount	3,954	3,954
Other intangible assets, Amortizable, Accumulated Amortization	(1,258)	(1,097)
Total amortizing intangible assets	2,696	2,857
Intangible Assets, Net (Excluding Goodwill), Total	2,696	2,857
Core Deposits [Member]
Goodwill and Intangible Assets [Line Items]
Other intangible assets, Amortizable, Gross Carrying Amount	3,954	3,954
Other intangible assets, Amortizable, Accumulated Amortization	(1,258)	(1,097)
Total amortizing intangible assets	$ 2,696	$ 2,857
Weighted Average Remaining Life (in years)	6 years 9 months 18 days	7 years 2 months 12 days