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Investment Securities - Other (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($) security | Dec. 31, 2019 USD ($) security | Dec. 31, 2018 USD ($)
Investment Securities |  |  |
Number of securities consisted in portfolio | security | 308 | 322 |
Number of securities in loss position | security | 10 | 128 |
Aggregate fair value of securities in loss position | $ 12,725,000 | $ 81,018,000 |
Loss position for 12 months or longer | 1,229,000 | 52,658,000 |
Aggregate unrealized loss included in accumulated other comprehensive income (loss) | 325,000 | 798,000 |
Proceeds from sale of available for sale debt securities | 5,845,000 | 21,503,000 | $ 77,168,000
Gains realized on sales | 49,000 | 6,000 | 253,000
Unrealized net losses related to equity securities | 61,000 |  |
Recognized net securities losses | $ 61,000 | $ (40,000) | $ 255,000

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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