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Investment Securities - Amortized Costs, Gains and Losses, Fair Value (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Investment Securities |  |
Total Amortized Cost | $ 175,123 | $ 222,578
Gross Unrealized Gains | 768 | 123
Gross Unrealized Losses | (798) | (4,496)
Fair value | 175,093 | 218,205
U.S. Treasury |  |
Investment Securities |  |
Total Amortized Cost | 987 | 1,984
Gross Unrealized Gains | 8 | 0
Gross Unrealized Losses | 0 | (32)
Fair value | 995 | 1,952
U.S government agency obligations |  |
Investment Securities |  |
Total Amortized Cost | 8,124 | 10,235
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (77) | (269)
Fair value | 8,047 | 9,966
U.S. government-sponsored enterprises |  |
Investment Securities |  |
Total Amortized Cost | 22,300 | 43,784
Gross Unrealized Gains | 41 | 23
Gross Unrealized Losses | (58) | (472)
Fair value | 22,283 | 43,335
Obligations of states and political subdivisions |  |
Investment Securities |  |
Total Amortized Cost | 33,704 | 40,859
Gross Unrealized Gains | 144 | 28
Gross Unrealized Losses | (59) | (501)
Fair value | 33,789 | 40,386
Mortgage-backed securities |  |
Investment Securities |  |
Total Amortized Cost | 105,522 | 121,230
Gross Unrealized Gains | 522 | 72
Gross Unrealized Losses | (428) | (3,110)
Fair value | 105,616 | 118,192
Other debt securities |  |
Investment Securities |  |
Total Amortized Cost | 3,000 | 3,000
Gross Unrealized Gains | 53 | 0
Gross Unrealized Losses | 0 | 0
Fair value | 3,053 | 3,000
Bank issued trust preferred securities |  |
Investment Securities |  |
Total Amortized Cost | 1,486 | 1,486
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (176) | (112)
Fair value | $ 1,310 | $ 1,374

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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=118939692&loc=d3e27161-111563 + Details
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- Definition Amount, before tax, of unrealized loss 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 (c) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 + Details
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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=118939692&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 + Details
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