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v3.25.1

Securities - Narrative (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 USD ($) security | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) security | Dec. 31, 2023 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Number of securities in unrealized loss positions | security | 2,082,000 |  | 2,115,000 |
Unrealized loss positions | $ 1,800,000,000 |  | $ 1,800,000,000 |
Percentage of portfolio | 86.00% |  | 86.00% |
Allowance for credit losses for available for sale debt securities | $ 0 |  | $ 0 |
Allowance for credit losses for held to maturity debt securities | 140,000 | $ 158,000 | 158,000 | $ 157,000
Investment securities, held to maturity | 1,843,991,000 |  | 1,867,848,000 |
Accrued interest receivable on available for sale debt securities | 12,400,000 |  | 12,700,000 |
Debt securities, held-to-maturity, amortized cost, after allowance for credit loss, transfer, amount | 4,600,000 |  |  |
Fair value of transferred securities | 4,100,000 |  |  |
Debt security, held-to-maturity, sold, realized gain (loss) | (400,000) |  |  |
Tax benefit from the sale of securities available for sale | 100,000 | $ 0 |  |
State and municipal |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment securities, held to maturity | 1,039,749,000 |  | 1,048,862,000 |
State and municipal | Internally-Assigned Rating Methodology |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment securities, held to maturity | $ 119,100,000 |  | $ 125,000,000.0 |

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