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Fair Value - Fair Value Measurements on a Recurring Basis by Asset Class and Level of Input (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | $ 1,043,615 |
Available-for-sale securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 1,043,615 | $ 961,241
Corporate debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 643,943 | 588,688
Collateralized debt obligations |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 114,127 | 112,468
Commercial mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 124,982 | 102,720
Residential mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 133,812 | 140,055
Other debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 26,751 | 17,310
Fair Value, Measurements, Recurring Basis |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total | 1,129,506 | 1,045,494
Fair Value, Measurements, Recurring Basis | Available-for-sale securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 1,043,615 | 961,241
Fair Value, Measurements, Recurring Basis | Corporate debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 643,943 | 588,688
Fair Value, Measurements, Recurring Basis | Collateralized debt obligations |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 114,127 | 112,468
Fair Value, Measurements, Recurring Basis | Commercial mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 124,982 | 102,720
Fair Value, Measurements, Recurring Basis | Residential mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 133,812 | 140,055
Fair Value, Measurements, Recurring Basis | Other debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 26,751 | 17,310
Fair Value, Measurements, Recurring Basis | Equity securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 85,891 | 84,253
Fair Value, Measurements, Recurring Basis | Equity securities | Financial services sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 69,930 | 69,900
Fair Value, Measurements, Recurring Basis | Equity securities | Utilities sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 5,629 | 5,810
Fair Value, Measurements, Recurring Basis | Equity securities | Energy sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 4,117 | 3,901
Fair Value, Measurements, Recurring Basis | Equity securities | Consumer sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 3,341 | 3,915
Fair Value, Measurements, Recurring Basis | Equity securities | Technology sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 1,974 | 500
Fair Value, Measurements, Recurring Basis | Equity securities | Industrial sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities |  | 180
Fair Value, Measurements, Recurring Basis | Equity securities | Communications sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 900 | 47
Fair Value, Measurements, Recurring Basis | Level 1 |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total | 1,106 | 863
Fair Value, Measurements, Recurring Basis | Level 1 | Available-for-sale securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Corporate debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Collateralized debt obligations |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Commercial mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Residential mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Other debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 1,106 | 863
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities | Financial services sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 1,052 | 816
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities | Utilities sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities | Energy sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities | Consumer sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 54 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities | Technology sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities | Industrial sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities |  | 0
Fair Value, Measurements, Recurring Basis | Level 1 | Equity securities | Communications sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 0 | 47
Fair Value, Measurements, Recurring Basis | Level 2 |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total | 1,091,069 | 1,020,263
Fair Value, Measurements, Recurring Basis | Level 2 | Available-for-sale securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 1,013,258 | 944,207
Fair Value, Measurements, Recurring Basis | Level 2 | Corporate debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 637,675 | 584,182
Fair Value, Measurements, Recurring Basis | Level 2 | Collateralized debt obligations |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 114,127 | 112,468
Fair Value, Measurements, Recurring Basis | Level 2 | Commercial mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 100,893 | 91,726
Fair Value, Measurements, Recurring Basis | Level 2 | Residential mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 133,812 | 138,521
Fair Value, Measurements, Recurring Basis | Level 2 | Other debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 26,751 | 17,310
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 77,811 | 76,056
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities | Financial services sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 65,378 | 63,750
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities | Utilities sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 5,629 | 5,810
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities | Energy sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 4,117 | 3,901
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities | Consumer sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 1,787 | 2,415
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities | Technology sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities | Industrial sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities |  | 180
Fair Value, Measurements, Recurring Basis | Level 2 | Equity securities | Communications sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 900 | 0
Fair Value, Measurements, Recurring Basis | Level 3 |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total | 37,331 | 24,368
Fair Value, Measurements, Recurring Basis | Level 3 | Available-for-sale securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 30,357 | 17,034
Fair Value, Measurements, Recurring Basis | Level 3 | Corporate debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 6,268 | 4,506
Fair Value, Measurements, Recurring Basis | Level 3 | Collateralized debt obligations |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 3 | Commercial mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 24,089 | 10,994
Fair Value, Measurements, Recurring Basis | Level 3 | Residential mortgage-backed securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 1,534
Fair Value, Measurements, Recurring Basis | Level 3 | Other debt securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total available-for-sale securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 6,974 | 7,334
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities | Financial services sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 3,500 | 5,334
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities | Utilities sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities | Energy sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 0 | 0
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities | Consumer sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 1,500 | 1,500
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities | Technology sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | 1,974 | 500
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities | Industrial sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities |  | 0
Fair Value, Measurements, Recurring Basis | Level 3 | Equity securities | Communications sector |  |
Fair value measurements on a recurring basis by asset class and level of input |  |
Total equity securities | $ 0 | $ 0

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