Goodwill and Other Intangible Assets - Summary of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] | ||
| Gross Carrying Amount | $ 257,772 | $ 249,772 |
| Accumulated Amortization | (119,750) | (103,160) |
| Net Carrying Amount | 138,022 | 146,612 |
| Core deposit intangible | ||
| Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] | ||
| Gross Carrying Amount | 242,102 | 242,102 |
| Accumulated Amortization | (113,716) | (97,936) |
| Net Carrying Amount | 128,386 | 144,166 |
| Customer relationship intangible | ||
| Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] | ||
| Gross Carrying Amount | 13,870 | 7,670 |
| Accumulated Amortization | (5,934) | (5,224) |
| Net Carrying Amount | 7,936 | $ 2,446 |
| Contract-based intangible | ||
| Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] | ||
| Gross Carrying Amount | 1,800 | |
| Accumulated Amortization | (100) | |
| Net Carrying Amount | $ 1,700 |