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Investment Securities (Amortized Cost and Estimated Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, Amortized Cost | $ 122,492 | $ 158,447
Available-for-sale securities, Gross Unrealized Gains | 577 | 117
Available-for-sale securities, Gross Unrealized Losses | 278 | 4,132
Available-for-sale, at fair value | 122,791 | 154,432
Held-to-maturity Securities, Amortized Cost | 8,786 | 6,043
Held-to-maturity securities, Gross Unrealized Gains | 1 | 14
Held-to-maturity securities, Gross Unrealized Losses | 133 | 57
Held-to-maturity securities, Estimated Fair Value | 8,654 | 6,000
Equity securities, at fair value | 1,342 | 1,269
Accounting Standards Update 2016-01 |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Equity securities, at fair value | 1,300 | 1,300
Fair value adjustment recorded through earnings | 42 | (5)
U.S. Government Agencies [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, Amortized Cost | 23,854 | 34,285
Available-for-sale securities, Gross Unrealized Gains | 3 | 2
Available-for-sale securities, Gross Unrealized Losses | 31 | 651
Available-for-sale, at fair value | 23,826 | 33,636
Held-to-maturity Securities, Amortized Cost | 1,386 | 1,642
Held-to-maturity securities, Gross Unrealized Losses | 5 | 25
Held-to-maturity securities, Estimated Fair Value | 1,381 | 1,617
States and Political Subdivisions [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Held-to-maturity Securities, Amortized Cost | 400 | 1,401
Held-to-maturity securities, Gross Unrealized Gains | 1 | 14
Held-to-maturity securities, Estimated Fair Value | 401 | 1,415
Mortgage-backed [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, Amortized Cost | 98,638 | 124,162
Available-for-sale securities, Gross Unrealized Gains | 574 | 115
Available-for-sale securities, Gross Unrealized Losses | 247 | 3,481
Available-for-sale, at fair value | 98,965 | 120,796
Other Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Held-to-maturity Securities, Amortized Cost | 7,000 | 3,000
Held-to-maturity securities, Gross Unrealized Losses | 128 | 32
Held-to-maturity securities, Estimated Fair Value | $ 6,872 | $ 2,968

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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=118939692&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=118939692&loc=d3e27161-111563 + Details
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- Definition Amortized cost of 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 -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 + Details
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