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Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Other Comprehensive Income (Loss) | 20. OTHER COMPREHENSIVE INCOME (LOSS) The tables below provide a summary of the components of OCI for the periods presented.
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | Before-tax |  |  | Tax effect |  |  | After-tax |  |  | Before-tax |  |  | Tax effect |  |  | After-tax |  |  | Before-tax |  |  | Tax effect |  |  | After-tax |
|  | (Dollars in thousands) |
Investment securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net change in fair value recorded in accumulated OCI |  | $ | 50,331 |  |  | $ | (14,880 | ) |  | $ | 35,451 |  |  | $ | (498,759 | ) |  | $ | 147,451 |  |  | $ | (351,308 | ) |  | $ | (56,075 | ) |  | $ | 16,578 |  |  | $ | (39,497 | )
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity |  |  | 914 |  |  |  | (270 | ) |  |  | 644 |  |  |  | 681 |  |  |  | (201 | ) |  |  | 480 |  |  |  | 256 |  |  |  | (76 | ) |  |  | 180 |
Derivatives designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net change in fair value recorded in accumulated OCI |  |  | (6,938 | ) |  |  | 2,070 |  |  |  | (4,868 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net change |  | $ | 44,306 |  |  | $ | (13,079 | ) |  | $ | 31,227 |  |  | $ | (498,078 | ) |  | $ | 147,250 |  |  | $ | (350,828 | ) |  | $ | (55,819 | ) |  | $ | 16,502 |  |  | $ | (39,317 | )

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//220/tableOfContent + Details
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