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Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations | 12 Months Ended
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Dec. 31, 2025
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract] |
Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations | Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations
(In thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliation with Registrant: United Fire & Casualty Company and consolidated property and casualty subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  | Claims and Claim Adjustment Expenses Incurred Related to: |  | Amortization of Deferred Policy Acquisition Costs |  |  |  |
|  | Reserves for Unpaid Claims and Claim Adjustment Expenses |  |  |  |  |  | Net Realized Investment Gains (Losses) |  |  |  |  |  |  |  |
Deferred Policy Acquisition Costs |  |  |  |  |  |  |  | Net Investment Income |  |  |  | Paid Claims and Claim Adjustment Expenses |  |
|  | Unearned Premium |  | Earned Premium |  |  |  | Current Year |  | Prior Years |  |  |  | Written Premium
2025 | $ | 158,184 |  |  | $ | 1,924,826 |  |  | $ | 660,210 |  |  | $ | 1,292,696 |  |  | $ | (3,822) |  |  | $ | 97,538 |  |  | $ | 778,480 |  |  | $ | (14,078) |  |  | $ | 315,323 |  |  | $ | 651,908 |  |  | $ | 1,346,219 |
2024 | $ | 147,224 |  |  | $ | 1,796,782 |  |  | $ | 621,448 |  |  | $ | 1,176,750 |  |  | $ | (5,429) |  |  | $ | 81,986 |  |  | $ | 745,813 |  |  | $ | (1,208) |  |  | $ | 281,338 |  |  | $ | 593,021 |  |  | $ | 1,231,470 |
2023 | $ | 126,532 |  |  | $ | 1,638,755 |  |  | $ | 549,384 |  |  | $ | 1,034,587 |  |  | $ | 1,274 |  |  | $ | 59,606 |  |  | $ | 701,664 |  |  | $ | 67,750 |  |  | $ | 244,991 |  |  | $ | 672,699 |  |  | $ | 1,066,901 |

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- Definition The entire disclosure of supplemental information for registrant, its subsidiary and 50-percent-or-less-owned equity basis investee, with liability for property-casualty insurance claim. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 18 -Paragraph Column A -Subparagraph (c) -Footnote 3 -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 18 -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-18(Column A)(c)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477965/944-235-S99-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-18) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477965/944-235-S99-3 + Details
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