Investment Securities - Additional Information (Detail) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Dec. 31, 2024 |
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| Debt Securities, Available-for-sale [Line Items] | ||
| Debt securities, held-to-maturity, allowance for credit loss | $ 0 | $ 0 |
| Debt securities weighted average remaining contractual maturity term | 24 years | |
| Total deposits | $ 11,984,823 | 11,948,381 |
| United States [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Securities issued by U.S. government percentage | 90.00% | |
| Investment Securities-AFS [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Pledged to secure amount | $ 2,700,000 | 2,790,000 |
| Total deposits | 1,090,000 | 1,180,000 |
| Secure public funds | 511,000 | 372,500 |
| Outstanding borrowings | 1,800,000 | |
| Secured unused borrowing capacity | 1,470,000 | 796,000 |
| Other purposes | 57,000 | 51,000 |
| Pledged to secure unused borrowing capacity | $ 2,030,000 | $ 1,630,000 |
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- Definition Debt securities weighted average remaining contractual maturity term. No definition available.
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- Definition Investment securities for other purposes No definition available.
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- Definition Outstanding Borrowings No definition available.
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- Definition Pledged to secure No definition available.
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- Definition Pledged To Secure Unused Borrowing Capacity No definition available.
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- Definition Secure Public Funds No definition available.
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- Definition Securities issued by government or government sponsored agencies and enterprises percentage. No definition available.
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- Definition Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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