Investment Securities (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Amortized Cost: Due after one year through five years	$ 19,457
Amortized Cost: Due after five years through ten years	25,245
Amortized Cost: Due after ten years	27,852
Amortized Cost, Single Maturity Date, Total	72,554
Fair Value: Due after one year through five years	19,485
Fair Value: Due after five years through ten years	25,170
Fair Value: Due after ten years	24,063
Fair Value: Single Maturity Date, Total	68,718
Available-for-sale Securities, Amortized Cost Basis	135,008	$ 144,123
Available-for-sale Securities	131,305	137,641
Amortized Cost: Due after one through five years, Held to maturity	16,164
Amortized Cost: Due after ten years, Held to maturity	16,215
Amortized Cost: Total, Held to maturity	32,379
Fair Value: Due after one through five years, Held to maturity	16,823
Fair Value: Due after ten years, Held to maturity	21,572
Fair Value: Total, Held to maturity	38,395
Held-to-maturity Securities	93,979	94,010
Held-to-maturity Securities, Fair Value	100,656	93,760
Residential mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	4,917
Available-for-sale Securities	4,900
Held-to-maturity Securities	42,939	46,491
Held-to-maturity Securities, Fair Value	43,253	45,210
Commercial mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	27,634	39,013
Available-for-sale Securities	27,764	37,752
Held-to-maturity Securities	15,521	15,821
Held-to-maturity Securities, Fair Value	15,865	15,828
Collateralized mortgage obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	29,903	36,669
Available-for-sale Securities	29,923	35,704
Held-to-maturity Securities	3,140	3,761
Held-to-maturity Securities, Fair Value	$ 3,143	$ 3,605

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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