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2. Investment Securities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Investment securities available for sale |  |
Amortized Cost | $ 193,296 |
Estimated Fair Value | 194,578 | $ 229,321
Mortgage-backed securities |  |
Investment securities available for sale |  |
Amortized Cost | 52,145 | 53,124
Gross Unrealized Gains | 516 | 814
Gross Unrealized Losses | 558 | 329
Estimated Fair Value | 52,103 | 53,609
U.S. Government sponsored enterprises |  |
Investment securities available for sale |  |
Amortized Cost | 35,356 | 40,504
Gross Unrealized Gains | 71 | 140
Gross Unrealized Losses | 793 | 264
Estimated Fair Value | 34,634 | 40,380
State and political subdivisions |  |
Investment securities available for sale |  |
Amortized Cost | 105,545 | 129,276
Gross Unrealized Gains | 2,089 | 4,310
Gross Unrealized Losses | 43 | 16
Estimated Fair Value | 107,591 | 133,570
Corporate bonds |  |
Investment securities available for sale |  |
Amortized Cost |  | 1,500
Gross Unrealized Gains |  | 12
Gross Unrealized Losses |  | 0
Estimated Fair Value |  | 1,512
Trust preferred securities |  |
Investment securities available for sale |  |
Amortized Cost | 250 | 250
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 250 | 250
Total |  |
Investment securities available for sale |  |
Amortized Cost | 193,296 | 224,654
Gross Unrealized Gains | 2,676 | 5,276
Gross Unrealized Losses | 1,394 | 609
Estimated Fair Value | $ 194,578 | $ 229,321

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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=82897076&loc=d3e27161-111563 + Details
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