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v3.19.1

Securities (Details Textual) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Debt Securities, Available-for-sale, Realized Gain | $ 2 |  |  |
Gain on sale of investments | 4 | $ 0 |  |
Gross unrealized losses | 6,476 |  | $ 15,214 |
Cumulative OTTI charges | 2,974 | $ 7,132 | 2,974 | $ 7,132
Amortized Cost | 781,073 |  | 793,084 |
Securities available-for-sale | $ 786,211 |  | $ 784,916 |
Minimum [Member] |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Basis point spread on variable rate | 1.60% |  |  |
Minimum [Member] | Standard Poors [Member] |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Credit Quality Indicator Pricing | 82.35 |  |  |
Minimum [Member] | Moody Investor Service [Member] |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Credit Quality Indicator Pricing | 20.75 |  |  |
Maximum [Member] |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Basis point spread on variable rate | 1.80% |  |  |

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