Federal Home Loan Bank Advances and Long-Term Debt - Schedule of Debt (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Short-Term Debt [Line Items] | ||
| Total FHLB advances | $ 3,000,000 | $ 3,000,000 |
| Weighted-average contractual interest rates for FHLB advances | 3.82% | 3.94% |
| Floating | ||
| Short-Term Debt [Line Items] | ||
| Total FHLB advances | $ 2,500,000 | $ 2,000,000 |
| Fixed | ||
| Short-Term Debt [Line Items] | ||
| Total FHLB advances | 500,000 | 750,000 |
| Overnight | ||
| Short-Term Debt [Line Items] | ||
| Total FHLB advances | $ 0 | $ 250,000 |
| Minimum | Floating | ||
| Short-Term Debt [Line Items] | ||
| Interest Rates | 3.77% | |
| Minimum | Fixed | ||
| Short-Term Debt [Line Items] | ||
| Interest Rates | 3.87% | |
| Maximum | Floating | ||
| Short-Term Debt [Line Items] | ||
| Interest Rates | 3.87% | |
| Maximum | Fixed | ||
| Short-Term Debt [Line Items] | ||
| Interest Rates | 3.95% | |
| Parent company | Junior Subordinated Debt | ||
| Short-Term Debt [Line Items] | ||
| Weighted-average rate (as a percent) | 5.48% | 5.53% |
| Long-term debt | $ 32,482 | $ 32,320 |