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Investment (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Schedule of Investments [Line Items] |  |
Amortized Cost: Due after one year through five years | $ 4,449 |
Amortized Cost: Due after five years through ten years | 34,838 |
Amortized Cost: Due after ten years | 27,871 |
Available for sale debt maturities amortized cost sub Total | 67,158 |
Fair Value: Due after one year through five years | 4,528 |
Fair Value: Due after five years through ten years | 35,530 |
Fair Value: Due after ten years | 22,102 |
Available for sale debt maturities fair value sub total | 62,160 |
Available-for-sale Securities, Amortized Cost Basis | 134,336 | $ 135,008
Available-for-sale Securities | 130,792 | 131,305
Amortized Cost: Due after one through five years, Held to maturity | 16,202 |
Amortized Cost: Due after ten years, Held to maturity | 16,215 |
Amortized Cost: Total, Held to maturity | 32,417 |
Fair Value: Due after one through five years, Held to maturity | 16,857 |
Fair Value: Due after ten years, Held to maturity | 20,257 |
Fair Value: Total, Held to maturity | 37,114 |
Held-to-maturity Securities | 91,399 | 93,979
Held-to-maturity securities, fair value | 98,311 | 100,656
Residential mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 9,945 | 4,917
Available-for-sale Securities | 10,147 | 4,900
Held-to-maturity Securities | 40,666 | 42,939
Held-to-maturity securities, fair value | 41,911 | 43,253
Commercial mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 29,210 | 27,634
Available-for-sale Securities | 29,670 | 27,764
Held-to-maturity Securities | 15,443 | 15,521
Held-to-maturity securities, fair value | 16,242 | 15,865
Collateralized mortgage obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 28,023 | 29,903
Available-for-sale Securities | 28,815 | 29,923
Held-to-maturity Securities | 2,873 | 3,140
Held-to-maturity securities, fair value | $ 3,044 | $ 3,143

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