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SCHEDULE I - SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) $ in Thousands | Dec. 31, 2022 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | $ 5,942,709
Fair Value | 5,423,838
Amount at which shown in the balance sheet | 5,423,838
Fixed income |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 5,926,785
Fair Value | 5,409,698
Amount at which shown in the balance sheet | 5,409,698
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 | 145,581
Fair Value | 135,900
Amount at which shown in the balance sheet | 135,900
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 | 2,400,261
Fair Value | 2,149,054
Amount at which shown in the balance sheet | 2,149,054
Fixed income | Foreign government debt |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 4,486
Fair Value | 3,787
Amount at which shown in the balance sheet | 3,787
Fixed income | Public utilities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 267,319
Fair Value | 266,895
Amount at which shown in the balance sheet | 266,895
Fixed income | ABS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 126,723
Fair Value | 120,687
Amount at which shown in the balance sheet | 120,687
Fixed income | CLOs |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 337,656
Fair Value | 329,832
Amount at which shown in the balance sheet | 329,832
Fixed income | Mortgage-backed |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 481,528
Fair Value | 435,224
Amount at which shown in the balance sheet | 435,224
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 | 2,149,156
Fair Value | 1,954,247
Amount at which shown in the balance sheet | 1,954,247
Fixed income | Commercial paper |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 14,075
Fair Value | 14,072
Amount at which shown in the balance sheet | 14,072
Equity Securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 15,924
Fair Value | 14,140
Amount at which shown in the balance sheet | 14,140
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 | 15,924
Fair Value | 14,140
Amount at which shown in the balance sheet | $ 14,140

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