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2. Investment Securities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Investment securities available for sale |  |
Amortized cost | $ 238,236 |
Estimated fair value | 245,249 | $ 195,746
Mortgage-backed securities |  |
Investment securities available for sale |  |
Amortized cost | 143,095 | 77,812
Gross unrealized gains | 2,812 | 1,371
Gross unrealized losses | 593 | 227
Estimated fair value | 145,314 | 78,956
U.S. Government sponsored enterprises |  |
Investment securities available for sale |  |
Amortized cost | 7,384 | 28,265
Gross unrealized gains | 331 | 443
Gross unrealized losses | 208 | 311
Estimated fair value | 7,507 | 28,397
State and political subdivisions |  |
Investment securities available for sale |  |
Amortized cost | 87,757 | 84,686
Gross unrealized gains | 4,758 | 3,657
Gross unrealized losses | 87 | 200
Estimated fair value | 92,428 | 88,143
Trust preferred securities |  |
Investment securities available for sale |  |
Amortized cost | 0 | 250
Gross unrealized gains | 0 | 0
Gross unrealized losses | 0 | 0
Estimated fair value | 0 | 250
Total |  |
Investment securities available for sale |  |
Amortized cost | 238,236 | 191,013
Gross unrealized gains | 7,901 | 5,471
Gross unrealized losses | 888 | 738
Estimated fair value | $ 245,249 | $ 195,746

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + 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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