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SCHEDULE I - SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | $ 4,953,501
Fair Value | 4,990,561
Amount at which shown in the balance sheet | 4,990,561
Fixed income |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 4,946,278
Fair Value | 4,983,315
Amount at which shown in the balance sheet | 4,983,315
Fixed income | U.S. Treasury securities and obligations of U.S. government corporations and agencies |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 179,850
Fair Value | 178,846
Amount at which shown in the balance sheet | 178,846
Fixed income | Obligations of U.S. states and political subdivisions |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 2,105,063
Fair Value | 2,152,524
Amount at which shown in the balance sheet | 2,152,524
Fixed income | Public utilities |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 222,619
Fair Value | 222,806
Amount at which shown in the balance sheet | 222,806
Fixed income | ABS |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 4,925
Fair Value | 4,923
Amount at which shown in the balance sheet | 4,923
Fixed income | Collateralized loan obligations |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 100,798
Fair Value | 101,023
Amount at which shown in the balance sheet | 101,023
Fixed income | Mortgage-backed |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 490,167
Fair Value | 479,161
Amount at which shown in the balance sheet | 479,161
Fixed income | All other corporate bonds |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 1,842,856
Fair Value | 1,844,032
Amount at which shown in the balance sheet | 1,844,032
Equity Securities |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 7,223
Fair Value | 7,246
Amount at which shown in the balance sheet | 7,246
Equity Securities | Industrial, miscellaneous and all other |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Amortized Cost | 7,223
Fair Value | 7,246
Amount at which shown in the balance sheet | $ 7,246

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- Definition This element represents the carrying (reported) amount of the entity's investments as of the balance sheet date. This amount may represent the individual investment's or group of similar investments' original cost, fair value, or such other amount at which the investment is shown in the entity's balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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- Definition This item represents the original cost of the entity's investments including investments in equity securities and, as to fixed maturities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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- Definition This item represents the reported amount of the entity's investments measured at fair value. Fair value is the price that would be received to sell an investment in an orderly transaction between market participants at the balance sheet [measurement] date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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