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Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities - Summary of Additional Information Related to the Investments (Details) - USD ($) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Investments in qualified housing partnerships, net: |  |  |  |
Tax credits and other tax benefits recognized | $ 15,660,000 | $ 13,180,000 | $ 47,058,000 | $ 38,764,000
Amortization expense included in income tax expense | 11,587,000 | 10,431,000 | 34,759,000 | 30,498,000
Investments in tax credit and other investments, net: |  |  |  |
Amortization of tax credit and other investments | 49,694,000 | 19,874,000 | 115,718,000 | 48,753,000
Unrealized losses on equity securities with readily determinable values | (674,000) | (1,014,000) | (682,000) | (2,958,000)
Historic Tax Credit Investment |  |  |  |
Investments in tax credit and other investments, net: |  |  |  |
Pre-tax impairment charge or recovery | $ (790,000) | $ 0 | $ 831,000 | $ 0

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- Definition Investments in Qualified Affordable Housing Partnerships, Net, And Related Unfunded Commitments + References No definition available. + Details
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- Definition Investments in Tax Credit and Other Investments, Net + References No definition available. + Details
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- Definition Amortization of investments in projects that qualify for Community Reinvestment Act ("CRA") and other tax credits, included as a component of noninterest expense. + References No definition available. + Details
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- Definition Tax Credit Investments Pre-Tax Impairment Charge Recovery + References No definition available. + Details
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- Definition Amount of affordable housing tax credits and other tax benefits recognized. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 323 -SubTopic 740 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481543/323-740-50-2 + Details
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- Definition Amount of amortization expense of investment in qualified affordable housing projects. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 323 -SubTopic 740 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481543/323-740-50-2 + Details
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- Definition Amount of unrealized gain (loss) on investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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