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Investment Securities - Gains (Losses) on Sales of Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Proceeds from sales of available-for-sale securities | $ 0 | $ 0 | $ 54,531 | $ 60,635
Gains, gross | 0 | 0 | 0 | 717
Losses, gross | 0 | 0 | 1,536 | 67
Proceeds from sales of equity securities | 206 | 1,100 | 206 | 1,100
Gain, gross | 0 | 100 | 0 | 100
Losses, gross | 294 | 0 | 294 | 0
Unrealized holding gains (losses) on equity securities | $ 160 | $ (26) | $ (148) | $ (85)

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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 -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 + Details
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- Definition Amount of realized loss 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 -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 + Details
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