Off-Balance-Sheet Activities - Commitments to extend credit (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
| Financial instruments outstanding whose contract amounts represent credit risk | $ 0 | |
| Commitments to extend credit | ||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
| Financial instruments outstanding whose contract amounts represent credit risk | $ 28,698 | $ 35,666 |