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Investment Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Available-For-Sale-Securities-And-Held-To-Maturity-Securities |  |
Investment securities available for sale, Cost Basis | $ 154,044 | $ 148,514
Investment securities available for sale, Gross Unrealized Gains | 1,341 | 765
Investment securities available for sale, Gross Unrealized Losses | (1,360) | (2,548)
Available for Sale, Fair Value, Total | 154,025 | 146,731
Investment securities held to maturity, Cost Basis | 40,528 | 40,760
Investment securities held to maturity, Gross Unrealized Gains | 484 | 222
Investment securities held to maturity, Gross Unrealized Losses | (282) | (658)
Held to Maturity, Fair Value, Total | 40,730 | 40,324
U.S. Agency [Member] |  |
Available-For-Sale-Securities-And-Held-To-Maturity-Securities |  |
Investment securities available for sale, Cost Basis | 7,606 | 7,685
Investment securities available for sale, Gross Unrealized Gains | 3 | 4
Investment securities available for sale, Gross Unrealized Losses | (65) | (160)
Available for Sale, Fair Value, Total | 7,544 | 7,529
U.S. Agency mortgage-backed securities [Member] |  |
Available-For-Sale-Securities-And-Held-To-Maturity-Securities |  |
Investment securities available for sale, Cost Basis | 94,806 | 90,169
Investment securities available for sale, Gross Unrealized Gains | 983 | 516
Investment securities available for sale, Gross Unrealized Losses | (537) | (1,158)
Available for Sale, Fair Value, Total | 95,252 | 89,527
Investment securities held to maturity, Cost Basis | 9,764 | 9,983
Investment securities held to maturity, Gross Unrealized Gains | 137 | 78
Investment securities held to maturity, Gross Unrealized Losses | (53) | (132)
Held to Maturity, Fair Value, Total | 9,848 | 9,929
Corporate bonds [Member] |  |
Available-For-Sale-Securities-And-Held-To-Maturity-Securities |  |
Investment securities available for sale, Cost Basis | 38,334 | 37,359
Investment securities available for sale, Gross Unrealized Gains | 127 | 131
Investment securities available for sale, Gross Unrealized Losses | (648) | (996)
Available for Sale, Fair Value, Total | 37,813 | 36,494
Corporate bonds and other securities [Member] |  |
Available-For-Sale-Securities-And-Held-To-Maturity-Securities |  |
Investment securities held to maturity, Cost Basis | 6,035 | 6,037
Investment securities held to maturity, Gross Unrealized Gains | 6 | 13
Investment securities held to maturity, Gross Unrealized Losses | (78) | (122)
Held to Maturity, Fair Value, Total | 5,963 | 5,928
Municipal [Member] |  |
Available-For-Sale-Securities-And-Held-To-Maturity-Securities |  |
Investment securities available for sale, Cost Basis | 13,298 | 13,301
Investment securities available for sale, Gross Unrealized Gains | 228 | 114
Investment securities available for sale, Gross Unrealized Losses | (110) | (234)
Available for Sale, Fair Value, Total | 13,416 | 13,181
Investment securities held to maturity, Cost Basis | 24,729 | 24,740
Investment securities held to maturity, Gross Unrealized Gains | 341 | 131
Investment securities held to maturity, Gross Unrealized Losses | (151) | (404)
Held to Maturity, Fair Value, Total | $ 24,919 | $ 24,467

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