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SCHEDULE I - SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) $ in Thousands | Dec. 31, 2024 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | $ 6,194,269
Fair Value | 5,866,451
Amount at which shown in the balance sheet | 5,866,451
Fixed income |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 6,178,123
Fair Value | 5,851,689
Amount at which shown in the balance sheet | 5,851,689
Fixed income | U.S. Treasury securities and obligations of U.S. government corporations and agencies |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 265,349
Fair Value | 260,493
Amount at which shown in the balance sheet | 260,493
Fixed income | Obligations of U.S. states and political subdivisions |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 2,065,953
Fair Value | 1,875,495
Amount at which shown in the balance sheet | 1,875,495
Fixed income | Foreign government debt |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 4,487
Fair Value | 3,798
Amount at which shown in the balance sheet | 3,798
Fixed income | Public utilities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 229,398
Fair Value | 229,258
Amount at which shown in the balance sheet | 229,258
Fixed income | ABS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 155,594
Fair Value | 156,517
Amount at which shown in the balance sheet | 156,517
Fixed income | CLOs |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 199,773
Fair Value | 200,059
Amount at which shown in the balance sheet | 200,059
Fixed income | Mortgage-backed |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 617,325
Fair Value | 585,931
Amount at which shown in the balance sheet | 585,931
Fixed income | All other corporate debt securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 2,628,229
Fair Value | 2,528,123
Amount at which shown in the balance sheet | 2,528,123
Fixed income | Commercial paper |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 12,015
Fair Value | 12,015
Amount at which shown in the balance sheet | 12,015
Equity Securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 16,146
Fair Value | 14,762
Amount at which shown in the balance sheet | 14,762
Equity Securities | Industrial, miscellaneous and all other |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 16,146
Fair Value | 14,762
Amount at which shown in the balance sheet | $ 14,762

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