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Investment Securities - Additional Information (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 USD ($) Security | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) Security | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items] |  |  |  |  |
Accrued interest receivable | $ 66,534,000 |  | $ 66,534,000 |  | $ 66,525,000
Carrying Value Of Investment Securities Pledged | 7,000,000,000 |  | 7,000,000,000 |  | 7,100,000,000
Realized loss on sale of investment securities | $ 1,103,000 | $ 6,879,000 | $ 4,201,000 | $ 9,981,000 |
Number of available for sale debt securities in unrealized loss positions | Security | 0 |  | 0 |  |
Available for sale debt securities credit loss | Security |  |  | 359 |  |
Mortgage-backed securities credit loss |  |  | $ 0 |  |
Intend to sell investment |  |  | 0 |  |
Held-to-maturity securities credit loss |  |  | 0 |  |
Held to maturity allowance for credit losses | $ 0 |  | 0 |  |
Available-for-sale Securities |  |  |  |  |
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items] |  |  |  |  |
Accrued interest receivable | 8,900,000 |  | 8,900,000 |  | 9,000,000
Realized loss on sale of investment securities |  | $ 4,600,000 |  |  |
Held-to-maturity Securities |  |  |  |  |
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items] |  |  |  |  |
Accrued interest receivable | $ 8,900,000 |  | $ 8,900,000 |  | $ 8,700,000

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- Definition The carrying value, as of the date of each statement of financial position presented, of investment securities, classified as available for sale or held to maturity, which are owned but transferred to serve as collateral to secure deposits of government entities and securities sold under agreements to repurchase, and payment of the related debt obligation, primarily a secured borrowing or repurchase agreement. + References No definition available. + Details
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- Definition Debt securities available for sale intend to sell unrealized loss position. + References No definition available. + Details
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- Definition Amount of increase (decrease) in allowance for credit loss of 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/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-9 + Details
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- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount of increase (decrease) in allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477802/946-310-45-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The difference between the carrying value and the sale price of an investment. A loss would be recognized when the sale price of the investment is less than the carrying value of the investment. This element refers to the Loss included in earnings and not to the cash proceeds of the sale. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
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