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Indebtedness (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Debt Disclosure [Abstract] |
Schedule of Long-term Debt Instruments |
Outstanding Debt |  |  |  |  |  |  |  |  |  | 2023 |  | Carry Value |
|  | Issuance Date |  | Maturity Date |  | Interest Rate |  | Original Amount |  | Unamortized Issuance Costs |  | Debt Discount |  | December 31, 2023 |  | December 31, 2022 |
($ in thousands) |  |  |  |  |  |  |  |  |
Description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(1) Senior Notes |  | 3/1/2019 |  | 3/1/2049 |  | 5.375 | % |  | 300,000 |  |  | $ | 2,363 |  |  | 5,478 |  |  | 292,159 |  |  | 291,881 |  |
(2) FHLBI |  | 12/16/2016 |  | 12/16/2026 |  | 3.03 | % |  | 60,000 |  |  | — |  |  | — |  |  | 60,000 |  |  | 60,000 |  |
(3) Senior Notes |  | 11/3/2005 |  | 11/1/2035 |  | 6.70 | % |  | 100,000 |  |  | 227 |  |  | 434 |  |  | 99,339 |  |  | 99,286 |  |
(4) Senior Notes |  | 11/16/2004 |  | 11/15/2034 |  | 7.25 | % |  | 50,000 |  |  | 114 |  |  | 74 |  |  | 49,812 |  |  | 49,791 |  |
Finance lease obligations |  |  |  |  |  |  |  |  |  |  |  |  | 2,636 |  |  | 3,718 |  |
Total long-term debt |  |  |  |  |  |  |  |  | $ | 2,704 |  |  | 5,986 |  |  | 503,946 |  |  | 504,676 |  |
Line of Credit Covenant Requirements |
|  | Required as of |  | Actual as of
|  | December 31, 2023 |  | December 31, 2023
Consolidated net worth 1 |  | Not less than | $2.2 billion |  | $3.3 billion
Debt to total capitalization ratio 1 |  | Not to exceed | 35% |  | 13.2%
1 Calculated in accordance with the Line of Credit.

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-2 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-1A Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482949/835-30-55-8 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480848/942-470-50-3 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-8 Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-6 Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-7 + Details
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- Definition Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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