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Securities (Schedule Of Amortized Cost Gross Unrealized Gains and Losses, and Fair Values of Securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Schedule of Investments [Line Items] |  |
Available for Sale, Amortized Cost |  | $ 309,289
Available for Sale, Gross Unrealized Gains |  | 1,051
Available for Sale, Gross Unrealized Losses | $ 0 | (7,776)
Available for Sale, Fair Value | 281,121 | 302,564
Total Debt Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available for Sale, Amortized Cost | 284,970 | 308,969
Available for Sale, Gross Unrealized Gains | 1,568 | 947
Available for Sale, Gross Unrealized Losses | (5,417) | (7,776)
Available for Sale, Fair Value | 281,121 | 302,140
US Treasury Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available for Sale, Amortized Cost | 2,001 | 2,005
Available for Sale, Gross Unrealized Losses | (3) | (8)
Available for Sale, Fair Value | 1,998 | 1,997
States and Political Subdivisions [Member] |  |
Schedule of Investments [Line Items] |  |
Available for Sale, Amortized Cost | 120,000 | 127,585
Available for Sale, Gross Unrealized Gains | 1,535 | 884
Available for Sale, Gross Unrealized Losses | (1,057) | (3,368)
Available for Sale, Fair Value | 120,478 | 125,101
Corporate Obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available for Sale, Amortized Cost | 10,068 | 10,255
Available for Sale, Gross Unrealized Gains | 16 | 37
Available for Sale, Gross Unrealized Losses | (95) | (180)
Available for Sale, Fair Value | 9,989 | 10,112
Mortgage-backed Securities-Government Sponsored Entities [Member] |  |
Schedule of Investments [Line Items] |  |
Available for Sale, Amortized Cost | 152,901 | 169,124
Available for Sale, Gross Unrealized Gains | 17 | 26
Available for Sale, Gross Unrealized Losses | (4,262) | (4,220)
Available for Sale, Fair Value | $ 148,656 | 164,930
Equity Securities-Financial Services [Member] |  |
Schedule of Investments [Line Items] |  |
Available for Sale, Amortized Cost |  | 320
Available for Sale, Gross Unrealized Gains |  | 104
Available for Sale, Fair Value |  | $ 424

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