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Available-for-Sale Securities - Narrative (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Available-for-Sale Securities
Debt Securities, Available-for-Sale [Line Items]
Allowance for credit loss	$ 0	$ 0
U. S. Government agency and mortgage-backed securities
Debt Securities, Available-for-Sale [Line Items]
Allowance for credit loss	0
Corporate bonds
Debt Securities, Available-for-Sale [Line Items]
Allowance for credit loss	0
Debt Securities | Asset Pledged as Collateral
Debt Securities, Available-for-Sale [Line Items]
Financial instruments, owned, at fair value	$ 14,000,000.0	$ 60,200,000

X

- Definition

The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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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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