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Investment Securities - Additional Information (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 USD ($) security | Dec. 31, 2025 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |
Investment securities portfolio, effective period | 3 years 4 months 24 days | 3 years 3 months 18 days
Number of investment securities with unrealized losses | security | 214 |
Percentage of gross unrealized losses (percent) | 6.30% |
Percentage of amortized investment securities portfolio (percent) | 5.90% |
Number of investment securities in a continuous loss position for over 12 months | security | 189 |
Loss duration (in months) | 12 months |
Allowance for credit losses on available-for-sale securities | $ 0 |
Allowance for credit losses on held-to-maturity securities | 0 |
Accrued interest receivable | 1,121,000 | $ 1,305,000
Public deposits |  |
Debt Securities, Available-for-sale [Line Items] |  |
Securities pledged to secure public deposits | 139,863,000 | 140,110,000
Federal Reserve Discount Window And U.S. Bankruptcy Trustee |  |
Debt Securities, Available-for-sale [Line Items] |  |
Securities pledged to secure public deposits | $ 0 | $ 2,370,000

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