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Investment Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
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Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost |  | $ 231,642 | $ 234,192
Gross Unrealized Gains |  | 62 | 158
Gross Unrealized Losses |  | (7,142) | (3,322)
Fair value |  | 224,562 | 231,028
U.S. Treasury |  |  |
Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost |  | 1,983 | 1,980
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | (67) | (13)
Fair value |  | 1,916 | 1,967
U.S. government and federal agency obligations |  |  |
Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost |  | 10,933 | 12,341
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | (459) | (268)
Fair value |  | 10,474 | 12,073
Government sponsored enterprises |  |  |
Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost |  | 45,777 | 37,321
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | (812) | (424)
Fair value |  | 44,965 | 36,897
Obligations of states and political subdivisions |  |  |
Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost |  | 41,088 | 47,019
Gross Unrealized Gains |  | 21 | 114
Gross Unrealized Losses |  | (764) | (477)
Fair value |  | 40,345 | 46,656
Residential - government agencies |  |  |
Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost |  | 127,375 | 131,045
Gross Unrealized Gains |  | 41 | 44
Gross Unrealized Losses |  | (4,918) | (2,140)
Fair value |  | 122,498 | 128,949
Other debt securities |  |  |
Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost | [1] | 3,000 | 3,000
Gross Unrealized Gains | [1] | 0 | 0
Gross Unrealized Losses | [1] | 0 | 0
Fair value | [1] | 3,000 | 3,000
Bank issued trust preferred securities |  |  |
Amortized cost and fair value of debt securities available-for-sale |  |  |
Total Amortized Cost |  | 1,486 | 1,486
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | (122) | 0
Fair value |  | $ 1,364 | $ 1,486
[1] | As of January 1, 2018, the Company adopted ASU 2016-01, resulting in reclassification of certain hybrid instruments possessing characteristics typically associated with debt obligations from other securities carried at cost to available for sale securities carried at fair value.

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