Investments (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Amortized Cost: Due after one year through five years	$ 34,464
Amortized Cost: Due after five years through ten years	10,259
Amortized Cost: Due after ten years	27,831
Amortized Cost: Sub Total	72,554
Fair Value: Due after one year through five years	34,449
Fair Value: Due after five years through ten years	10,235
Fair Value: Due after ten years	23,209
Available For Sale Debt Maturities Fair Value Sub Total	67,893
Available-for-sale Securities, Amortized Cost Basis	139,150	$ 144,123
Available-for-sale Securities	135,076	137,641
Amortized Cost: Due after one year through five years, Held to maturity	16,127
Amortized Cost: Due after ten years, Held to maturity	16,215
Amortized Cost: Total, Held to maturity	32,342
Fair Value: Due after one year through five years, Held to maturity	16,794
Fair Value: Due after ten years, Held to maturity	22,213
Fair Value: Total, Held to maturity	39,007
Held-to-maturity securities	96,604	94,010
Held-to-maturity securities, fair value	104,173	93,760
Residential mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Held-to-maturity securities	45,197	46,491
Held-to-maturity securities, fair value	45,522	45,210
Commercial mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	34,475	39,013
Available-for-sale Securities	34,853	37,752
Held-to-maturity securities	15,597	15,821
Held-to-maturity securities, fair value	16,125	15,828
Collateralized mortgage obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	32,121	36,669
Available-for-sale Securities	32,330	35,704
Held-to-maturity securities	3,468	3,761
Held-to-maturity securities, fair value	$ 3,519	$ 3,605

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