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Other Comprehensive Income - Summary of Components of OCI (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Equity [Abstract] |  |  |  |
Net change in fair value recorded in accumulated OCI, Before-tax | $ (142,883) | $ 8,917 | $ (344,955) | $ (31,474)
Net change in fair value recorded in accumulated OCI, Tax effect | 42,241 | (2,636) | 101,981 | 9,305
Net change in fair value recorded in accumulated OCI, After-tax | (100,642) | 6,281 | (242,974) | (22,169)
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, Before-tax | 93 | 20 | 147 | 101
Amortization of unrealized gains (losses) on securities transferred from available-for-sale to held-to-maturity, Tax effect | (28) | (6) | (44) | (30)
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, After-tax | 65 | 14 | 103 | 71
Net change, Before-tax | (142,790) | 8,937 | (344,809) | (31,373)
Net change, Tax effect | 42,213 | (2,642) | 101,938 | 9,275
Net change, After-tax | $ (100,577) | $ 6,295 | $ (242,871) | $ (22,098)

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- Definition Amount, before tax and after adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 + Details
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