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v3.25.3

INVESTMENTS - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) entity | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) entity
Gain (Loss) on Securities [Line Items] |  |  |  |  |
Proceeds from Sale of Debt Securities, Available-for-sale | $ 189,300 | $ 135,400 | $ 353,863 | $ 347,403 |
Debt Securities, Available-for-sale, Realized Gain |  | 700 | 3,500 | 1,100 |
Available-for-sale Securities, Gross Realized Losses |  | 1,000 | 10,000 | 6,900 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 0 |  | $ 0 |  | $ 0
NumberOfSecuritiesInSecurityPortfolio | 740 |  | 740 |  | 743
NumberOfSecuritiesInUnrealizedLossPosition | 534 |  | 534 |  | 644
Debt Securities, Held-to-maturity, Nonaccrual | $ 0 |  | $ 0 |  | $ 0
Net gain (loss) on investment securities | (42) | (17,468) | (9,748) | (22,719) |
Debt Securities, Available-for-Sale, Unrealized Loss Position | 1,923,991 |  | 1,923,991 |  | 2,531,876
Debt Securities, Unrealized Gain (Loss) |  |  | $ 9,100 |  | $ 1,100
Net gain (loss) on equity securities |  |  |  | 2,200 |
Debt Securities, Available-for-Sale, Realized Gain (Loss), Number | entity |  |  | 5 |  | 2
Debt Securities, Realized Gain (Loss) | 3,400 | $ 9,700 | $ 3,400 | $ 9,700 |
Financial Instrument, Other |  |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position | $ 21,000 |  | $ 21,000 |  | $ 11,100

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