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v3.25.1

Securities - Narrative (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 USD ($) bond debt_security | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) debt_security | Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items] |  |  |  |
Transferred Securities, Unrealized Loss, Before Tax | $ 103,100,000 |  | $ 105,100,000 |
Securities transferred, Unrealized Loss, Net of Tax | 81,400,000 |  | 83,000,000.0 |
Fair value of securities transferred from AFS to HTM | 0 |  | 0 |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] |  |  |  |
Net gain (loss) on sale of securities AFS | (554,000) | $ (18,000) |  |
Gross realized losses on AFS securities | (1,200,000) | 79,000 |  |
Gross realized gains on AFS securities | 600,000 | 61,000 |  |
Proceeds from sale of AFS securities | 120,242,000 | 917,000 |  |
Equity investments | 9,458,000 |  | 9,467,000 |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Sale of HTM portfolio | 0 | 0 |  |
Interest receivable | 36,245,000 |  | $ 46,724,000 |
FHLB stock with other-than-temporary impairment | 0 |  |  |
Other-than-temporarily impaired equity investments | $ 0 |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | debt_security | 361 |  | 421 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | $ 430,971,000 | 469,373,000 | $ 426,161,000 | $ 560,510,000
Less: Net gains recognized during the period on equity investments sold during the period | 0 | 0 |  |
Debt Securities, Available-for-Sale, Accrued Interest | 8,300,000 |  | 13,600,000 |
Debt Securities, Held-to-Maturity, Accrued Interest | $ 8,000,000.0 |  | 12,900,000 |
Held-To-Maturity Securities, Number Of Bonds Below Investment Grade | bond | 2 |  |  |
Gain (Loss) on Hedging Activity | $ (1,200,000) |  |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Nonaccrual | 0 |  | 0 |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 1,278,394,000 |  | 1,279,234,000 |
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 |  | 0 |
State and political subdivisions |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 64,000 | 0 |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 1,041,455,000 |  | 1,040,912,000 |
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 |  | 0 |
Corporate bonds and other |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 64,000 | $ 0 |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 124,256,000 |  | 124,095,000 |
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | 0 |  | 0 |
Asset Pledged as Collateral |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities | 2,230,000,000 |  | 2,180,000,000 |
Asset Pledged As Collateral, Excess Amount |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities | 425,200,000 |  | 431,700,000 |
Financial Asset, Past Due |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | $ 0 |  | $ 0 |

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