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Investment Securities - Amortized Costs, Gains and Losses, Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Amortized cost and fair value of debt securities available-for-sale |  |
Total Amortized Cost | $ 221,167 | $ 222,578
Gross Unrealized Gains | 235 | 123
Gross Unrealized Losses | (2,863) | (4,496)
Fair value | 218,539 | 218,205
U.S. Treasury |  |
Amortized cost and fair value of debt securities available-for-sale |  |
Total Amortized Cost | 2,666 | 1,984
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (11) | (32)
Fair value | 2,655 | 1,952
U.S. government and federal agency obligations |  |
Amortized cost and fair value of debt securities available-for-sale |  |
Total Amortized Cost | 9,745 | 10,235
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (230) | (269)
Fair value | 9,515 | 9,966
Government sponsored enterprises |  |
Amortized cost and fair value of debt securities available-for-sale |  |
Total Amortized Cost | 39,790 | 43,784
Gross Unrealized Gains | 43 | 23
Gross Unrealized Losses | (279) | (472)
Fair value | 39,554 | 43,335
Obligations of states and political subdivisions |  |
Amortized cost and fair value of debt securities available-for-sale |  |
Total Amortized Cost | 38,408 | 40,859
Gross Unrealized Gains | 67 | 28
Gross Unrealized Losses | (239) | (501)
Fair value | 38,236 | 40,386
Mortgage-backed securities |  |
Amortized cost and fair value of debt securities available-for-sale |  |
Total Amortized Cost | 126,072 | 121,230
Gross Unrealized Gains | 125 | 72
Gross Unrealized Losses | (1,954) | (3,110)
Fair value | 124,243 | 118,192
Other debt securities |  |
Amortized cost and fair value of debt securities available-for-sale |  |
Total Amortized Cost | 3,000 | 3,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (1) | 0
Fair value | 2,999 | 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 | (149) | (112)
Fair value | $ 1,337 | $ 1,374

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- Definition Amortized cost of 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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as 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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