Summary of Significant Accounting Policies (Detail) |
6 Months Ended | |
|---|---|---|
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Jun. 30, 2026
USD ($)
county
segment
investmentSecurity
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Jun. 30, 2025
USD ($)
|
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| Significant Accounting Policies [Line Items] | ||
| Number of subsidiary business trusts (in trusts) | investmentSecurity | 2 | |
| Company's investments in the trusts | $ | $ 1,200,000 | |
| Number of operating segments (in segments) | segment | 1 | |
| Number of reportable segments (in segments) | segment | 1 | |
| Loans contractual past due | 90 days | |
| Security credit losses recognized | $ | $ 0 | $ 0 |
| California | ||
| Significant Accounting Policies [Line Items] | ||
| Number of counties (in counties) | county | 31 | |
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- Definition Nonaccrual status loans contractual past due. No definition available.
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- Definition Number Of Counties Bank Operates No definition available.
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- Definition Number of subsidiary business trust. No definition available.
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- Definition Significant Accounting Policies [Line Items] No definition available.
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- Definition Amount of credit loss expense on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) transferred into available-for-sale out of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition This element represents the aggregate cost of investments accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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