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Investments (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Schedule of Investments [Line Items] |  |
Amortized Cost: Due in one year or less | $ 225 |
Amortized Cost: Due after one year through five years | 16,763 |
Amortized Cost: Due after five years through ten years | 17,968 |
Amortized Cost: Due after ten years | 27,810 |
Amortized Cost: Sub Total | 62,766 |
Fair Value: Due in one year or less | 225 |
Fair Value: Due after one year through five years | 16,718 |
Fair Value: Due after five years through ten years | 17,876 |
Fair Value: Due after ten years | 24,517 |
Available For Sale Debt Maturities Fair Value Sub Total | 59,336 |
Available-for-sale Securities, Amortized Cost Basis | 139,263 | $ 144,123
Available-for-sale Securities | 135,809 | 137,641
Amortized Cost: Due after one year through five years, Held to maturity | 16,090 |
Amortized Cost: Due after ten years, Held to maturity | 14,840 |
Amortized Cost: Total, Held to maturity | 30,930 |
Fair Value: Due after one year through five years, Held to maturity | 16,714 |
Fair Value: Due after ten years, Held to maturity | 18,894 |
Fair Value: Total, Held to maturity | 35,608 |
Held-to-maturity securities | 97,499 | 94,010
Held-to-maturity securities, fair value | 102,503 | 93,760
Residential mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Held-to-maturity securities | 47,320 | 46,491
Held-to-maturity securities, fair value | 47,212 | 45,210
Commercial mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 42,487 | 39,013
Available-for-sale Securities | 42,346 | 37,752
Held-to-maturity securities | 15,672 | 15,821
Held-to-maturity securities, fair value | 16,101 | 15,828
Collateralized mortgage obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 34,010 | 36,669
Available-for-sale Securities | 34,127 | 35,704
Held-to-maturity securities | 3,577 | 3,761
Held-to-maturity securities, fair value | $ 3,582 | $ 3,605

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