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Investment Securities - Amortized Cost and Market Value of Securities Available for Sale (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Investment Securities |  |
Amortized Cost | $ 164,787 | $ 173,453
Gross Unrealized Gains | 12 | 8
Gross Unrealized Losses | (25,372) | (29,328)
Fair Value | 139,427 | 144,133
Trading securities | 0 | 0
Held to maturity | 0 | 0
Collateralized mortgage obligations |  |
Investment Securities |  |
Amortized Cost | 15,962 | 17,596
Gross Unrealized Gains | 8 | 7
Gross Unrealized Losses | (2,309) | (2,348)
Fair Value | 13,661 | 15,255
Agency mortgage-backed securities |  |
Investment Securities |  |
Amortized Cost | 51,930 | 58,801
Gross Unrealized Losses | (5,816) | (6,908)
Fair Value | 46,114 | 51,893
Municipal securities |  |
Investment Securities |  |
Amortized Cost | 42,990 | 43,092
Gross Unrealized Gains | 4 | 1
Gross Unrealized Losses | (9,265) | (10,796)
Fair Value | 33,729 | 32,297
U.S. Government agency securities |  |
Investment Securities |  |
Amortized Cost | 45,406 | 45,471
Gross Unrealized Losses | (7,712) | (8,891)
Fair Value | 37,694 | 36,580
Corporate securities |  |
Investment Securities |  |
Amortized Cost | 1,500 | 1,500
Gross Unrealized Losses | (216) | (175)
Fair Value | 1,284 | 1,325
U.S. Treasury securities |  |
Investment Securities |  |
Amortized Cost | 6,999 | 6,993
Gross Unrealized Losses | (54) | (210)
Fair Value | $ 6,945 | $ 6,783

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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://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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