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Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2024
Equity [Abstract] |
Summary of Components of Other Comprehensive Income | The table below provides a summary of the components of other comprehensive income (“OCI”) for the periods presented.
|  | Three Months Ended March 31, |
|  | 2024 |  |  | 2023 |
|  | 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 |  | $ | (35,856 | ) |  | $ | 10,600 |  |  | $ | (25,256 | ) |  | $ | 40,424 |  |  | $ | (11,951 | ) |  | $ | 28,473 |
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity |  |  | 163 |  |  |  | (48 | ) |  |  | 115 |  |  |  | 278 |  |  |  | (82 | ) |  |  | 196 |
Derivatives designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value hedges: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net change in fair value recorded in accumulated OCI |  |  | 17,831 |  |  |  | (4,962 | ) |  |  | 12,869 |  |  |  | — |  |  |  | — |  |  |  | — |
Cash flow hedges: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net change in fair value recorded in accumulated OCI |  |  | 789 |  |  |  | (233 | ) |  |  | 556 |  |  |  | — |  |  |  | — |  |  |  | — |
Net change |  | $ | (17,073 | ) |  | $ | 5,357 |  |  | $ | (11,716 | ) |  | $ | 40,702 |  |  | $ | (12,033 | ) |  | $ | 28,669 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481694/830-30-45-20 + Details
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