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Investment Securities (Schedule of Fair Value and Unrealized Loss on Investments in a Continuous Unrealized Loss Position) (Details) $ in Thousands | Jun. 30, 2017 USD ($) security | Dec. 31, 2016 USD ($) security
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Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security | 87 | 149
Available-for-sale securities, Less than 12 Months: Fair Value | $ 89,664 | $ 118,601
Available-for-sale securities, Less than 12 Months: Unrealized Losses | $ 1,524 | $ 4,453
Available-for-sale securities, 12 Months or More: Number of Securities | security | 10 | 2
Available-for-sale securities, 12 Months or More: Fair Value | $ 7,624 | $ 1,056
Available-for-sale securities, 12 Months or More: Unrealized Losses | $ 195 | $ 112
Available-for-sale securities, Total: Number of Securities | security | 97 | 151
Available-for-sale securities, Total: Fair Value | $ 97,288 | $ 119,657
Available-for-sale securities, Total: Unrealized Losses | $ 1,719 | $ 4,565
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 19 |
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 29,406 |
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 113 |
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 |
Held-to-maturity securities, Total: Number of Securities | security | 19 |
Held-to-maturity securities, Total: Fair Value | $ 29,406 |
Held-to-maturity securities, Total: Unrealized Losses | $ 113 |
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 106 |
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Fair Value | $ 119,070 |
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 1,637 |
Available-for-sale securities and Held-to-maturity securities,, 12 Months or More: Number of Securities | security | 10 |
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Fair Value | $ 7,624 |
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Unrealized Losses | $ 195 |
Available-for-sale securities and Held-to-maturity securities, Total: Number of Securities | security | 116 |
Available-for-sale securities and Held-to-maturity securities, Total: Fair Value | $ 126,694 |
Available-for-sale securities and Held-to-maturity securities, Total: Unrealized Losses | $ 1,832 |
U.S. Treasury and U.S. government agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security | 21 | 23
Available-for-sale securities, Less than 12 Months: Fair Value | $ 39,077 | $ 43,698
Available-for-sale securities, Less than 12 Months: Unrealized Losses | $ 852 | $ 1,542
Available-for-sale securities, 12 Months or More: Number of Securities | security | 1 | 0
Available-for-sale securities, 12 Months or More: Fair Value | $ 2,694 |
Available-for-sale securities, 12 Months or More: Unrealized Losses | $ 6 |
Available-for-sale securities, Total: Number of Securities | security | 22 | 23
Available-for-sale securities, Total: Fair Value | $ 41,771 | $ 43,698
Available-for-sale securities, Total: Unrealized Losses | $ 858 | $ 1,542
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 2 |
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 4,991 |
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 5 |
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 |
Held-to-maturity securities, Total: Number of Securities | security | 2 |
Held-to-maturity securities, Total: Fair Value | $ 4,991 |
Held-to-maturity securities, Total: Unrealized Losses | $ 5 |
Mortgage-backed U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security | 18 | 18
Available-for-sale securities, Less than 12 Months: Fair Value | $ 26,466 | $ 24,321
Available-for-sale securities, Less than 12 Months: Unrealized Losses | $ 291 | $ 579
Available-for-sale securities, 12 Months or More: Number of Securities | security | 1 | 0
Available-for-sale securities, 12 Months or More: Fair Value | $ 535 |
Available-for-sale securities, 12 Months or More: Unrealized Losses | $ 16 |
Available-for-sale securities, Total: Number of Securities | security | 19 | 18
Available-for-sale securities, Total: Fair Value | $ 27,001 | $ 24,321
Available-for-sale securities, Total: Unrealized Losses | $ 307 | $ 579
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 14 |
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 22,879 |
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 99 |
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 |
Held-to-maturity securities, Total: Number of Securities | security | 14 |
Held-to-maturity securities, Total: Fair Value | $ 22,879 |
Held-to-maturity securities, Total: Unrealized Losses | $ 99 |
State and political subdivision obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security | 48 | 108
Available-for-sale securities, Less than 12 Months: Fair Value | $ 24,121 | $ 50,582
Available-for-sale securities, Less than 12 Months: Unrealized Losses | $ 381 | $ 2,332
Available-for-sale securities, 12 Months or More: Number of Securities | security | 7 | 0
Available-for-sale securities, 12 Months or More: Fair Value | $ 3,845 |
Available-for-sale securities, 12 Months or More: Unrealized Losses | $ 133 |
Available-for-sale securities, Total: Number of Securities | security | 55 | 108
Available-for-sale securities, Total: Fair Value | $ 27,966 | $ 50,582
Available-for-sale securities, Total: Unrealized Losses | $ 514 | $ 2,332
Held-to-maturity securities, Less than 12 Months: Number of Securities | security | 3 |
Held-to-maturity securities, Less than 12 Months: Fair Value | $ 1,536 |
Held-to-maturity securities, Less than 12 Months: Unrealized Losses | $ 9 |
Held-to-maturity securities, 12 Months or More: Number of Securities | security | 0 |
Held-to-maturity securities, Total: Number of Securities | security | 3 |
Held-to-maturity securities, Total: Fair Value | $ 1,536 |
Held-to-maturity securities, Total: Unrealized Losses | $ 9 |
Equity Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale securities, Less than 12 Months: Number of Securities | security | 0 | 0
Available-for-sale securities, 12 Months or More: Number of Securities | security | 1 | 2
Available-for-sale securities, 12 Months or More: Fair Value | $ 550 | $ 1,056
Available-for-sale securities, 12 Months or More: Unrealized Losses | $ 40 | $ 112
Available-for-sale securities, Total: Number of Securities | security | 1 | 2
Available-for-sale securities, Total: Fair Value | $ 550 | $ 1,056
Available-for-sale securities, Total: Unrealized Losses | $ 40 | $ 112

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