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Investment Securities (Schedule of Fair Value and Unrealized Loss on Debt Security Investments in a Continuous Unrealized Loss Position) (Details) $ in Thousands | Sep. 30, 2020 USD ($) security | Dec. 31, 2019 USD ($) security
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Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security | 3 | 5
Available-for-sale securities, Less than 12 Months: Fair Value | $ 4,048 | $ 6,295
Available-for-sale securities, Less than 12 Months: Unrealized Losses | $ 26 | $ 28
Available-for-sale securities, 12 Months or More: Number of Securities | security | 0 | 21
Available-for-sale securities, 12 Months or More: Fair Value |  | $ 22,585
Available-for-sale securities, 12 Months or More: Unrealized Losses |  | $ 155
Available-for-sale securities, Total: Number of Securities | security | 3 | 26
Available-for-sale securities, Total: Fair Value | $ 4,048 | $ 28,880
Available-for-sale securities, Total: Unrealized Losses | $ 26 | $ 183
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 17 | 27
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 14,665 | $ 38,852
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 57 | $ 267
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 | 14
Held-to-maturity securities, 12 Months or More: Fair Value |  | $ 14,049
Held-to-maturity securities, 12 Months or More: Unrealized Losses |  | $ 68
Held-to-maturity securities, Total: Number of Securities | security | 17 | 41
Held-to-maturity securities, Total: Fair Value | $ 14,665 | $ 52,901
Held-to-maturity securities, Total: Unrealized Losses | $ 57 | $ 335
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 20 | 32
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Fair Value | $ 18,713 | $ 45,147
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 83 | $ 295
Available-for-sale securities and Held-to-maturity securities,, 12 Months or More: Number of Securities | security | 0 | 35
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Fair Value |  | $ 36,634
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Unrealized Losses |  | $ 223
Available-for-sale securities and Held-to-maturity securities, Total: Number of Securities | security | 20 | 67
Available-for-sale securities and Held-to-maturity securities, Total: Fair Value | $ 18,713 | $ 81,781
Available-for-sale securities and Held-to-maturity securities, Total: Unrealized Losses | $ 83 | $ 518
U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security |  | 4
Available-for-sale securities, Less than 12 Months: Fair Value |  | $ 4,652
Available-for-sale securities, Less than 12 Months: Unrealized Losses |  | $ 24
Available-for-sale securities, 12 Months or More: Number of Securities | security |  | 7
Available-for-sale securities, 12 Months or More: Fair Value |  | $ 11,982
Available-for-sale securities, 12 Months or More: Unrealized Losses |  | $ 46
Available-for-sale securities, Total: Number of Securities | security |  | 11
Available-for-sale securities, Total: Fair Value |  | $ 16,634
Available-for-sale securities, Total: Unrealized Losses |  | $ 70
U.S. Treasury and U.S. government agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Held-to-maturity securities, Less than 12 Months: Number of Securities | security |  | 18
Held-to-maturity securities, Less than 12 Months: Fair Value |  | $ 29,024
Held-to-maturity securities, Less than 12 Months: Unrealized Losses |  | $ 219
Held-to-maturity securities, 12 Months or More: Number of Securities | security |  | 1
Held-to-maturity securities, 12 Months or More: Fair Value |  | $ 2,999
Held-to-maturity securities, 12 Months or More: Unrealized Losses |  | $ 1
Held-to-maturity securities, Total: Number of Securities | security |  | 19
Held-to-maturity securities, Total: Fair Value |  | $ 32,023
Held-to-maturity securities, Total: Unrealized Losses |  | $ 220
Corporate debt securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security | 3 |
Available-for-sale securities, Less than 12 Months: Fair Value | $ 4,048 |
Available-for-sale securities, Less than 12 Months: Unrealized Losses | $ 26 |
Available-for-sale securities, 12 Months or More: Number of Securities | security | 0 |
Available-for-sale securities, Total: Number of Securities | security | 3 |
Available-for-sale securities, Total: Fair Value | $ 4,048 |
Available-for-sale securities, Total: Unrealized Losses | $ 26 |
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 6 |
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 5,420 |
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 17 |
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 |
Held-to-maturity securities, Total: Number of Securities | security | 6 |
Held-to-maturity securities, Total: Fair Value | $ 5,420 |
Held-to-maturity securities, Total: Unrealized Losses | $ 17 |
Mortgage-backed U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security |  | 1
Available-for-sale securities, Less than 12 Months: Fair Value |  | $ 1,643
Available-for-sale securities, Less than 12 Months: Unrealized Losses |  | $ 4
Available-for-sale securities, 12 Months or More: Number of Securities | security |  | 14
Available-for-sale securities, 12 Months or More: Fair Value |  | $ 10,603
Available-for-sale securities, 12 Months or More: Unrealized Losses |  | $ 109
Available-for-sale securities, Total: Number of Securities | security |  | 15
Available-for-sale securities, Total: Fair Value |  | $ 12,246
Available-for-sale securities, Total: Unrealized Losses |  | $ 113
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 4 | 6
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 6,730 | $ 8,445
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 21 | $ 35
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 | 13
Held-to-maturity securities, 12 Months or More: Fair Value |  | $ 11,050
Held-to-maturity securities, 12 Months or More: Unrealized Losses |  | $ 67
Held-to-maturity securities, Total: Number of Securities | security | 4 | 19
Held-to-maturity securities, Total: Fair Value | $ 6,730 | $ 19,495
Held-to-maturity securities, Total: Unrealized Losses | $ 21 | $ 102
State and political subdivision obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 7 | 3
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 2,515 | $ 1,383
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 19 | $ 13
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 | 0
Held-to-maturity securities, Total: Number of Securities | security | 7 | 3
Held-to-maturity securities, Total: Fair Value | $ 2,515 | $ 1,383
Held-to-maturity securities, Total: Unrealized Losses | $ 19 | $ 13

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