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Schedule I - Summary of Investments - Other Than Investments in Related Parties | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract] |
Schedule I - Summary of Investments- Other than Investments in Related Parties |
Types of investment |  |  |  |  |  |
($ in thousands) |  | Amortized Cost or Cost |  | Fair Value |  | Carrying Amount
Fixed income securities: |  |  |  |  |  |
Held-to-maturity: |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 4,505 |  |  | 4,795 |  |  | 4,507 |
Public utilities |  | 2,436 |  |  | 2,579 |  |  | 2,464 |
All other corporate securities |  | 9,898 |  |  | 10,627 |  |  | 9,853 |
Total fixed income securities, held-to-maturity |  | 16,839 |  |  | 18,001 |  |  | 16,824 |
Available-for-sale: |  |  |  |  |  |
U.S. government and government agencies |  | 110,038 |  |  | 116,140 |  |  | 116,140 |
Foreign government |  | 16,801 |  |  | 18,366 |  |  | 18,366 |
Obligations of states and political subdivisions |  | 1,159,588 |  |  | 1,247,137 |  |  | 1,247,137 |
Public utilities |  | 68,269 |  |  | 73,821 |  |  | 73,821 |
All other corporate securities |  | 2,083,934 |  |  | 2,254,231 |  |  | 2,254,231 |
Collateralized loan obligation securities and other asset-backed securities |  | 1,014,820 |  |  | 1,026,551 |  |  | 1,026,551 |
Residential mortgage-backed securities |  | 999,485 |  |  | 1,051,788 |  |  | 1,051,788 |
Commercial mortgage-backed securities |  | 620,582 |  |  | 667,894 |  |  | 667,894 |
Total fixed income securities, available-for-sale |  | 6,073,517 |  |  | 6,455,928 |  |  | 6,455,928 |
Equity securities: |  |  |  |  |  |
Common stock: |  |  |  |  |  |
Banks, trusts and insurance companies |  | 18,366 |  |  | 17,474 |  |  | 17,474 |
Industrial, miscellaneous and all other |  | 281,619 |  |  | 291,158 |  |  | 291,158 |
Nonredeemable preferred stock |  | 1,566 |  |  | 1,735 |  |  | 1,735 |
Total equity securities |  | 301,551 |  |  | 310,367 |  |  | 310,367 |
Commercial mortgage loans |  | 46,306 |  |  |  |  | 46,306 |
Short-term investments |  | 409,865 |  |  |  |  | 409,852 |
Other investments |  | 266,322 |  |  |  |  | 266,322 |
Total investments |  | $ | 7,114,400 |  |  |  |  | 7,505,599 |
See accompanying Report of Independent Registered Public Accounting Firm in Item 8. "Financial Statements and Supplementary Data." of this Form 10-K.

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- Definition The entire disclosure of information about investment held by insurance company, excluding investment in related party. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 15 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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=120401592&loc=d3e611379-123010 + Details
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