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Investments (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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Schedule of Investments [Line Items] |  |
Amortized Cost: Due after one year through five years | $ 4,418 |
Amortized Cost: Due after five years through ten years | 20,052 |
Amortized Cost: Due after ten years | 67,165 |
Available For Sale Debt Maturities Amortized Cost Sub Total | 91,635 |
Fair Value: Due after one year through five years | 4,517 |
Fair Value: Due after five years through ten years | 20,613 |
Fair Value: Due after ten years | 59,398 |
Available For Sale Debt Maturities Fair Value Sub Total | 84,528 |
Available-for-sale Securities, Amortized Cost Basis | 214,364 | $ 230,464
Available-for-sale Securities | 204,006 | 226,885
Amortized Cost: Due after ten years, Held to maturity | 20,602 |
Fair Value: Due after ten years, Held to maturity | 27,781 |
Held-to-maturity Securities | 69,357 | 68,263
Held-to-maturity securities, fair value | 77,571 | 77,612
Residential mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 22,606 | 22,999
Available-for-sale Securities | 21,822 | 22,899
Held-to-maturity Securities | 38,470 | 34,597
Held-to-maturity securities, fair value | 39,064 | 35,732
Commercial mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 33,257 | 32,549
Available-for-sale Securities | 32,757 | 33,042
Held-to-maturity Securities | 9,795 | 11,716
Held-to-maturity securities, fair value | 10,228 | 12,303
Collateralized mortgage obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 66,866 | 70,372
Available-for-sale Securities | 64,899 | 70,637
Held-to-maturity Securities | 490 | 1,348
Held-to-maturity securities, fair value | $ 498 | $ 1,406

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