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Securities, Amortized Cost and Fair Value of Securities Available-for-sale (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Available-for-sale Investment Securities [Abstract] |  |
Amortized Cost | $ 109,239 | $ 104,650
Gross Unrealized Gains | 3,087 | 970
Gross Unrealized Losses | (4) | (302)
Estimated Fair Value | 112,322 | 105,318
U.S. Government Sponsored Entity Securities [Member] |  |
Available-for-sale Investment Securities [Abstract] |  |
Amortized Cost | 17,814 | 16,579
Gross Unrealized Gains | 339 | 163
Gross Unrealized Losses | 0 | (6)
Estimated Fair Value | 18,153 | 16,736
Agency Mortgage-backed Securities, Residential [Member] |  |
Available-for-sale Investment Securities [Abstract] |  |
Amortized Cost | 91,425 | 88,071
Gross Unrealized Gains | 2,748 | 807
Gross Unrealized Losses | (4) | (296)
Estimated Fair Value | $ 94,169 | $ 88,582

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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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