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Other Comprehensive Income - Summary of Components of OCI (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Equity [Abstract] |  |
Net change in fair value recorded in accumulated OCI, Before-tax | $ 36,619 | $ 19,350
Net change in fair value recorded in accumulated OCI, Tax effect | (10,826) | (5,720)
Net change in fair value recorded in accumulated OCI, After-tax | 25,793 | 13,630
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, Before-tax | (1) | (1,123)
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, Tax effect | 0 | 332
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, After-tax | (1) | (791)
Net change, Before-tax | 36,618 | 18,227
Net change, Tax effect | (10,826) | (5,388)
Net change, After-tax | $ 25,792 | $ 12,839

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- Definition Other comprehensive income (loss) amortization of unrealized gain (loss) on securities transferred from available for sale to held to maturity net of tax. + References No definition available. + Details
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- Definition Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss. + 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 http://asc.fasb.org/extlink&oid=118930883&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 http://asc.fasb.org/extlink&oid=118930883&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 http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 + Details
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