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Securities - Schedule of Components of Investment Securities (Losses) Gains, Net (Detail) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Available-for-sale debt securities: |  |  |  |
Gains realized on sales |  | $ 1,060,000 | $ 0 | $ 5,080,000
Equity securities with readily determinable fair values: |  |  |  |
Fair value adjustments, net | $ (1,441,000) | (4,427,000) | (8,570,000) | (9,607,000)
Equity securities without readily determinable fair values: |  |  |  |
Fair value adjustments, net | 96,000 | (141,000) | 1,261,000 | 8,138,000
Sales |  |  | 66,162,000 |
Losses realized on sales |  | (2,000) | 0 | (2,300)
Total investment securities (losses) gains, net | $ (1,345,000) | $ (3,510,000) | $ 58,853,000 | $ 3,609,000

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- Definition Amount of unrealized and realized gain (loss) on investment in debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27357-111563 + Details
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