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Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2022
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 September 30, |
|  | 2022 |  |  | 2021 |
|  | 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 |  | $ | (194,111 | ) |  | $ | 57,386 |  |  | $ | (136,725 | ) |  | $ | (14,515 | ) |  | $ | 4,291 |  |  | $ | (10,224 | )
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity |  |  | 95 |  |  |  | (28 | ) |  |  | 67 |  |  |  | 72 |  |  |  | (21 | ) |  |  | 51 |
Net change |  | $ | (194,016 | ) |  | $ | 57,358 |  |  | $ | (136,658 | ) |  | $ | (14,443 | ) |  | $ | 4,270 |  |  | $ | (10,173 | )
|  | Nine Months Ended September 30, |
|  | 2022 |  |  | 2021 |
|  | 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 |  | $ | (539,066 | ) |  | $ | 159,367 |  |  | $ | (379,699 | ) |  | $ | (45,989 | ) |  | $ | 13,596 |  |  | $ | (32,393 | )
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity |  |  | 242 |  |  |  | (72 | ) |  |  | 170 |  |  |  | 173 |  |  |  | (51 | ) |  |  | 122 |
Net change |  | $ | (538,825 | ) |  | $ | 159,296 |  |  | $ | (379,529 | ) |  | $ | (45,816 | ) |  | $ | 13,545 |  |  | $ | (32,271 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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