Investment Securities Available For Sale, at Fair Value - Schedule of Weighted Average Lives of Investment Securities (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Investments, Debt and Equity Securities [Abstract] | ||
| 0 to 5 years | $ 1,469,377 | $ 1,523,025 |
| Over 5 to 10 years | 5,257,097 | 5,165,072 |
| 10+ years | 233,839 | 216,684 |
| Total | $ 6,960,313 | $ 6,904,781 |