Investment Securities - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Investments, Debt and Equity Securities [Abstract] | ||||
| Unrealized gain (loss) in the period on investment securities held at the end of the period | $ (4,084) | $ 9,109 | $ 17,510 | $ 28,184 |