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Fair Value of Financial Instruments - Schedule of Quantitative Information About Significant Unobservable Inputs (Level 3) for Assets Measured at Fair Value on a Recurring Basis (Details) $ in Thousands | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
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Quantitative information for Level 3 Fair Value Measurements Assets |  |
Investment securities available-for-sale, estimated fair value | $ 1,739,423 | $ 895,034
Municipal obligations |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Investment securities available-for-sale, estimated fair value | 235,434 | 20,254
Corporate debt obligations |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Investment securities available-for-sale, estimated fair value | 48,255 | $ 12,287
Level 3 | Discounted Cash Flow |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Loans held for investment | 286 |
Level 3 | Discounted Cash Flow | Municipal obligations |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Investment securities available-for-sale, estimated fair value | $ 10,886 |
Level 3 | Discounted Cash Flow | Measurement Input, Discount Rate |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Loans held for investment, measurement input | 0.25 |
Level 3 | Observable Bids | Corporate debt obligations |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Investment securities available-for-sale, estimated fair value | $ 11,017 |
Level 3 | Minimum | Discounted Cash Flow | Measurement Input, Discount Rate | Municipal obligations |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Debt securities, measurement input | 0.000 |
Level 3 | Minimum | Discounted Cash Flow | Measurement Input, Collateral Value |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Loans held for investment, measurement input | 0.00 |
Level 3 | Maximum | Discounted Cash Flow | Measurement Input, Discount Rate | Municipal obligations |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Debt securities, measurement input | 0.0365 |
Level 3 | Maximum | Discounted Cash Flow | Measurement Input, Collateral Value |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Loans held for investment, measurement input | 17,600 |
Level 3 | Weighted Average | Discounted Cash Flow | Measurement Input, Discount Rate | Municipal obligations |  |
Quantitative information for Level 3 Fair Value Measurements Assets |  |
Debt securities, measurement input | 0.0191 |

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