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Loans and Allowance for Credit Losses - Other (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Loans and Allowance for Credit Losses
Accrued interest receivable	$ 4,789,000		$ 4,789,000		$ 4,575,000
Financing receivable, nonaccrual, interest income	0	$ 0	0	$ 0
Financing receivable, modified, subsequent default	0	0	0	0
Financing receivable, modified, commitment to lend	0		0		0
Unfunded loan commitment
Loans and Allowance for Credit Losses
Off-Balance-Sheet, credit loss liability	131,000		131,000		$ 131,000
Off-Balance-Sheet, credit loss, liability, credit loss expense (reversal)	0	0	0	0
Commercial business
Loans and Allowance for Credit Losses
Financing receivable, modified in period, amount	$ 0	$ 2,000,000	0	$ 2,000,000
Financing receivable, modified in period to total financing receivables (in percent)		3.00%		3.00%
Financing receivable modification, increase (decrease) from modification			$ 0
Financing receivable, modified, payment deferral, period	0 years		0 years
Financing receivable, modified, weighted average interest rate decrease from modification			0.00%
Accrued interest receivable
Loans and Allowance for Credit Losses
Accrued interest receivable	$ 2,400,000		$ 2,400,000

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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