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Investment Securities (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Schedule of Investments [Line Items] |  |
Amortized Cost: Due in one year or less | $ 229 |
Amortized Cost: Due after one year through five years | 16,772 |
Amortized Cost: Due after five years through ten years | 22,050 |
Amortized Cost: Due after ten years | 29,390 |
Amortized Cost, Single Maturity Date, Total | 68,441 |
Fair Value: Due in one year or less | 231 |
Fair Value: Due after one year through five years | 16,475 |
Fair Value: Due after five years through ten years | 21,265 |
Fair Value: Due after ten years | 26,214 |
Fair Value: Single Maturity Date, Total | 64,185 |
Available for sale debt maturities fair value sub total | 137,641 |
Available For Sale Debt Maturities Amortized Cost Total | 144,123 |
Available-for-sale Securities, Amortized Cost Basis | 144,123 | $ 153,552
Available-for-sale Securities | 137,641 | 146,470
Amortized Cost: Due after one through five years, Held to maturity | 8,345 |
Amortized Cost: Due after five years through ten years, Held to maturity | 7,672 |
Amortized Cost: Due after ten years, Held to maturity | 11,920 |
Amortized Cost: Total, Held to maturity | 27,937 |
Fair Value: Due after one through five years, Held to maturity | 8,401 |
Fair Value: Due after five years through ten years, Held to maturity | 7,736 |
Fair Value: Due after ten years, Held to maturity | 12,980 |
Fair Value: Total, Held to maturity | 29,117 |
Held-to-maturity Securities | 94,010 | 93,632
Held-to-maturity Securities, Fair Value | 93,760 | 95,346
Residential mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Held-to-maturity Securities | 46,491 | 47,771
Held-to-maturity Securities, Fair Value | 45,210 | 47,442
Commercial mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost: without Single Maturity Date | 39,013 |
Fair Value: without Single Maturity Date | 37,752 |
Available-for-sale Securities, Amortized Cost Basis | 39,013 | 41,771
Available-for-sale Securities | 37,752 | 40,891
Held-to-maturity Securities | 15,821 | 17,288
Held-to-maturity Securities, Fair Value | 15,828 | 17,518
Collateralized mortgage obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost: without Single Maturity Date | 36,669 |
Fair Value: without Single Maturity Date | 35,704 |
Available-for-sale Securities, Amortized Cost Basis | 36,669 | 41,298
Available-for-sale Securities | 35,704 | 40,384
Held-to-maturity Securities | 3,761 | 4,187
Held-to-maturity Securities, Fair Value | $ 3,605 | $ 4,118

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