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Reinsurance and Catastrophes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Reinsurance Recoverable on Unpaid Insurance Reserves [Line Items] |  |  |  |
Losses incurred for catastrophe claims, carrying amount |  | $ 94.9 | $ 97.6 | $ 80.0
Reinsurance balances receivable |  | $ 404.3 | $ 424.2 |
Percentage of coverage for catastrophe losses above retention amount, layer one |  | 89.00% |  |
Coverage above retention per occurrence under layer one catastrophe reinsurance |  | $ 25.0 |  |
Retention base amount per occurrence under layer one |  | $ 35.0 |  |
Percentage of coverage for catastrophe losses above retention amount, layer two |  | 90.00% |  |
Coverage above retention per occurrence under layer two catastrophe reinsurance |  | $ 35.0 |  |
Retention base amount per occurrence under layer two |  | $ 60.0 |  |
Percentage of coverage for catastrophe losses above retention amount, layer three |  | 92.00% |  |
Coverage above retention per occurrence under layer three catastrophe reinsurance |  | $ 90.0 |  |
Retention base amount per occurrence under layer three |  | 95.0 |  |
Liability coverages, Company reinsured each loss above a retention per occurrence |  | 5.0 |  |
Amount of maximum individual life insurance risk retained |  | $ 0.5 |  |
Percentage of life reinsured catastrophe risk in excess specified retention per occurrence amount |  | 100.00% |  |
Other accidental death and dismemberment risk, ceded, percent |  | 100.00% |  |
Employer sponsored products, gross assumed group disability and specialty health benefits retained, percent |  | 72.50% |  |
Individual life and annuity benefits, ceded, percent |  | 100.00% |  |
Forecast |  |  |  |
Reinsurance Recoverable on Unpaid Insurance Reserves [Line Items] |  |  |  |
Percentage of coverage for catastrophe losses above retention amount, layer one | 95.00% |  |  |
Coverage above retention per occurrence under layer one catastrophe reinsurance | $ 25.0 |  |  |
Retention base amount per occurrence under layer one | $ 35.0 |  |  |
Percentage of coverage for catastrophe losses above retention amount, layer two | 95.00% |  |  |
Coverage above retention per occurrence under layer two catastrophe reinsurance | $ 35.0 |  |  |
Retention base amount per occurrence under layer two | $ 60.0 |  |  |
Percentage of coverage for catastrophe losses above retention amount, layer three | 95.00% |  |  |
Coverage above retention per occurrence under layer three catastrophe reinsurance | $ 90.0 |  |  |
Retention base amount per occurrence under layer three | $ 95.0 |  |  |
National Guardian Life Insurance Company NGL |  |  |  |
Reinsurance Recoverable on Unpaid Insurance Reserves [Line Items] |  |  |  |
Reinsurance balances receivable |  | $ 173.5 |  |
Reinsurance recoverable as a percentage of shareholders' equity, in excess |  | 10.00% |  |
Minimum |  |  |  |
Reinsurance Recoverable on Unpaid Insurance Reserves [Line Items] |  |  |  |
Liability coverages, Company reinsured each loss above a retention per occurrence |  | $ 20.0 |  |
Amount of group life policy insurance risk retained |  | 0.1 |  |
Amount life catastrophe risk retention per occurrence |  | 1.0 |  |
Maximum |  |  |  |
Reinsurance Recoverable on Unpaid Insurance Reserves [Line Items] |  |  |  |
Amount of group life policy insurance risk retained |  | 0.1 |  |
Amount life catastrophe risk retention per occurrence |  | $ 35.0 |  |

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- Definition The charge against earnings in the period for the uninsured portion of a loss from a fire, explosion, or natural disaster (hurricane, earthquake). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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- Definition Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-5 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477409/944-310-45-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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