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Investment Securities, Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Securities, Available-for-Sale: |  |
Amortized Cost | $ 220,378 | $ 244,283
Unrealized Gains | 305 | 186
Unrealized Losses | 3,015 | 6,048
Fair Value | 217,668 | 238,421
Debt Securities, Held-to-Maturity: |  |
Debt securities, held-to-maturity, at cost | 32,363 | 29,721
Unrealized Gains | 104 | 84
Unrealized Losses | 240 | 781
Fair Value | 32,227 | 29,024
Equity Securities, Amortized Cost Basis |  | 2,122
Equity securities with a readily determinable fair value, at fair value | 2,185 | 2,078
U.S. Treasury notes [Member] |  |
Debt Securities, Available-for-Sale: |  |
Amortized Cost | 2,276 | 2,278
Unrealized Gains | 0 | 0
Unrealized Losses | 19 | 43
Fair Value | 2,257 | 2,235
U.S. Agency notes [Member] |  |
Debt Securities, Available-for-Sale: |  |
Amortized Cost | 75,681 | 80,708
Unrealized Gains | 0 | 0
Unrealized Losses | 1,231 | 2,368
Fair Value | 74,450 | 78,340
U.S. Agency mortgage-backed securities [Member] |  |
Debt Securities, Available-for-Sale: |  |
Amortized Cost | 55,718 | 57,584
Unrealized Gains | 9 | 7
Unrealized Losses | 1,161 | 1,981
Fair Value | 54,566 | 55,610
Debt Securities, Held-to-Maturity: |  |
Debt securities, held-to-maturity, at cost | 0 |
Fair Value | 0 |
Non-taxable Municipal securities [Member] |  |
Debt Securities, Available-for-Sale: |  |
Amortized Cost | 70,068 | 86,059
Unrealized Gains | 163 | 77
Unrealized Losses | 516 | 1,422
Fair Value | 69,715 | 84,714
Debt Securities, Held-to-Maturity: |  |
Debt securities, held-to-maturity, at cost | 25,915 | 26,021
Unrealized Gains | 68 | 84
Unrealized Losses | 187 | 635
Fair Value | 25,796 | 25,470
Taxable Municipal securities [Member] |  |
Debt Securities, Available-for-Sale: |  |
Amortized Cost | 16,635 | 17,654
Unrealized Gains | 133 | 102
Unrealized Losses | 88 | 234
Fair Value | 16,680 | 17,522
Debt Securities, Held-to-Maturity: |  |
Debt securities, held-to-maturity, at cost | 6,448 | 3,700
Unrealized Gains | 36 | 0
Unrealized Losses | 53 | 146
Fair Value | $ 6,431 | $ 3,554

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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