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Organization and Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	Sep. 30, 2024 bank_branch	Apr. 30, 2021 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Retail Branch Locations | bank_branch	80
April 30, 2021 Issuance
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Subordinated Debt		$ 400
Debt Instrument [Line Items]
Subordinated Debt		$ 400

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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.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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