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INVESTMENT SECURITIES (Narrative) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) security shares | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) security shares | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) security
Class of Stock [Line Items] |  |  |  |  |
Proceeds from sales of investment securities available-for-sale | $ 104,500 | $ 86,500 | $ 279,539 | $ 86,508 |
Investment securities pledged as collateral | $ 489,100 |  | $ 489,100 |  | $ 483,600
Number of investment securities in an unrealized loss position | security | 130 |  | 130 |  | 37
Gross realized gain from sale of available for sale investment securities | $ 1,100 | 300 | $ 3,300 | 300 |
Gross realized loss from sale of available for sale investment securities | $ (1,000) | $ (600) | $ (3,200) | $ (600) |
Common Class B | Visa |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares owned (in shares) | shares | 34,631 |  | 34,631 |  |

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- Definition Amount of realized gain 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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563 + Details
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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, 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 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455 + Details
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