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Investment Securities (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Available for sale |  |
Total investment securities available for sale, Amortized Cost | $ 71,795 | $ 68,181
Total investment securities available for sale, Gross Unrealized Gains | 56 | 185
Total investment securities available for sale, Gross Unrealized Losses | 1,784 | 763
Available-for-sale securities, investment securities, Fair Value | 70,067 | 67,603
US government agencies [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 8,987 | 8,749
Total investment securities available for sale, Gross Unrealized Gains | 1 | 1
Total investment securities available for sale, Gross Unrealized Losses | 274 | 97
Available-for-sale securities, investment securities, Fair Value | 8,714 | 8,653
SBA securities [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 3,904 | 4,087
Total investment securities available for sale, Gross Unrealized Gains |  |
Total investment securities available for sale, Gross Unrealized Losses | 135 | 24
Available-for-sale securities, investment securities, Fair Value | 3,769 | 4,063
State and political subdivisions [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 8,530 | 11,242
Total investment securities available for sale, Gross Unrealized Gains | 49 | 179
Total investment securities available for sale, Gross Unrealized Losses | 107 | 25
Available-for-sale securities, investment securities, Fair Value | 8,472 | 11,396
Asset-backed securities [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 6,703 |
Total investment securities available for sale, Gross Unrealized Gains | 3 |
Total investment securities available for sale, Gross Unrealized Losses | 15 |
Available-for-sale securities, investment securities, Fair Value | 6,691 |
Mortgage-backed securities [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 43,671 | 44,103
Total investment securities available for sale, Gross Unrealized Gains | 3 | 5
Total investment securities available for sale, Gross Unrealized Losses | 1,253 | 617
Available-for-sale securities, investment securities, Fair Value | 42,421 | 43,491
Mortgage-backed securities [Member] | FHLMC [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 8,401 | 9,102
Total investment securities available for sale, Gross Unrealized Gains |  |
Total investment securities available for sale, Gross Unrealized Losses | 327 | 149
Available-for-sale securities, investment securities, Fair Value | 8,074 | 8,953
Mortgage-backed securities [Member] | FNMA [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 32,089 | 29,383
Total investment securities available for sale, Gross Unrealized Gains | 2 | 3
Total investment securities available for sale, Gross Unrealized Losses | 780 | 386
Available-for-sale securities, investment securities, Fair Value | 31,311 | 29,000
Mortgage-backed securities [Member] | GNMA [Member] |  |
Available for sale |  |
Total investment securities available for sale, Amortized Cost | 3,181 | 5,618
Total investment securities available for sale, Gross Unrealized Gains | 1 | 2
Total investment securities available for sale, Gross Unrealized Losses | 146 | 82
Available-for-sale securities, investment securities, Fair Value | $ 3,036 | $ 5,538

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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