Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets (Details)	Dec. 31, 2025
Focus Business Bank \| Core Deposit Intangible
Goodwill and Other Intangible Assets
Useful life, amortization period (in years)	10 years
United American Bank
Goodwill and Other Intangible Assets
Useful life, amortization period (in years)	3 years
Presidio Bank \| Below/ (Above) Market Lease
Goodwill and Other Intangible Assets
Useful life, amortization period (in years)	5 years
BVF/CSNK \| Customer relationship and brokered relationship intangibles
Goodwill and Other Intangible Assets
Useful life, amortization period (in years)	10 years

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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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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