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SCHEDULE I - SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) $ in Thousands | Dec. 31, 2021 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | $ 6,413,496
Fair Value | 6,603,649
Amount at which shown in the balance sheet | 6,603,649
Fixed income |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 6,397,658
Fair Value | 6,587,581
Amount at which shown in the balance sheet | 6,587,581
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 | 133,990
Fair Value | 133,407
Amount at which shown in the balance sheet | 133,407
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 | 2,408,688
Fair Value | 2,534,653
Amount at which shown in the balance sheet | 2,534,653
Fixed income | Foreign government debt |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 13,749
Fair Value | 13,650
Amount at which shown in the balance sheet | 13,650
Fixed income | Public utilities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 251,110
Fair Value | 250,835
Amount at which shown in the balance sheet | 250,835
Fixed income | ABS |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 150,888
Fair Value | 150,710
Amount at which shown in the balance sheet | 150,710
Fixed income | Collateralized loan obligations |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 360,436
Fair Value | 360,939
Amount at which shown in the balance sheet | 360,939
Fixed income | Mortgage-backed |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 625,321
Fair Value | 628,240
Amount at which shown in the balance sheet | 628,240
Fixed income | All other corporate bonds |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 2,453,476
Fair Value | 2,515,147
Amount at which shown in the balance sheet | 2,515,147
Equity Securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Amortized Cost | 15,838
Fair Value | 16,068
Amount at which shown in the balance sheet | 16,068
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 | 15,838
Fair Value | 16,068
Amount at which shown in the balance sheet | $ 16,068

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