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Investment Securities - Amortized Costs, Gains and Losses, Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Investment Securities |  |
Total Amortized Cost | $ 278,482 | $ 193,785
Gross Unrealized Gains | 3,075 | 4,570
Gross Unrealized Losses | (3,029) | (325)
Fair value | 278,528 | 198,030
U.S. Treasury |  |
Investment Securities |  |
Total Amortized Cost | 3,012 | 2,772
Gross Unrealized Gains | 17 | 26
Gross Unrealized Losses | 0 | 0
Fair value | 3,029 | 2,798
U.S. government and federal agency obligations |  |
Investment Securities |  |
Total Amortized Cost | 1,316 | 11,732
Gross Unrealized Gains | 17 | 197
Gross Unrealized Losses | 0 | 0
Fair value | 1,333 | 11,929
U.S. government-sponsored enterprises |  |
Investment Securities |  |
Total Amortized Cost | 17,497 | 22,495
Gross Unrealized Gains | 177 | 379
Gross Unrealized Losses | (108) | 0
Fair value | 17,566 | 22,874
Obligations of states and political subdivisions |  |
Investment Securities |  |
Total Amortized Cost | 119,220 | 56,943
Gross Unrealized Gains | 1,073 | 1,801
Gross Unrealized Losses | (1,382) | 0
Fair value | 118,911 | 58,744
Mortgage-backed securities |  |
Investment Securities |  |
Total Amortized Cost | 125,126 | 88,357
Gross Unrealized Gains | 1,221 | 1,809
Gross Unrealized Losses | (1,334) | (54)
Fair value | 125,013 | 90,112
Other debt securities |  |
Investment Securities |  |
Total Amortized Cost | 10,825 | 10,000
Gross Unrealized Gains | 570 | 358
Gross Unrealized Losses | 0 | (14)
Fair value | 11,395 | 10,344
Bank issued trust preferred securities |  |
Investment Securities |  |
Total Amortized Cost | 1,486 | 1,486
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (205) | (257)
Fair value | $ 1,281 | $ 1,229

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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=121645371&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=121645371&loc=d3e27161-111563 + Details
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