SUMMARY OF INVESTMENTS - Fixed Maturities Unrealized Loss (Details) $ in Thousands	Sep. 30, 2025 USD ($) issue	Dec. 31, 2024 USD ($) issue
Number of Issues
Less than 12 months \| issue	111	242
12 months or longer \| issue	278	387
Fair Value
Less than 12 months	$ 276,124	$ 670,804
12 months or longer	591,296	744,741
Total	867,420	1,415,544
Gross Unrealized Loss
Less than 12 months	1,399	11,097
12 months or longer	58,374	85,743
Total	$ 59,773	$ 96,840
US Treasury and government agencies
Number of Issues
Less than 12 months \| issue	1	5
12 months or longer \| issue	24	28
Fair Value
Less than 12 months	$ 900	$ 16,006
12 months or longer	74,062	83,386
Total	74,962	99,392
Gross Unrealized Loss
Less than 12 months	1	67
12 months or longer	6,251	9,188
Total	$ 6,252	$ 9,255
States, municipalities and political subdivisions
Number of Issues
Less than 12 months \| issue	30	67
12 months or longer \| issue	56	72
Fair Value
Less than 12 months	$ 39,700	$ 92,003
12 months or longer	111,261	135,350
Total	150,961	227,353
Gross Unrealized Loss
Less than 12 months	241	1,159
12 months or longer	1,673	3,925
Total	$ 1,914	$ 5,084
Corporate
Number of Issues
Less than 12 months \| issue	44	73
12 months or longer \| issue	92	154
Fair Value
Less than 12 months	$ 125,943	$ 203,142
12 months or longer	248,875	370,211
Total	374,818	573,352
Gross Unrealized Loss
Less than 12 months	580	4,474
12 months or longer	23,870	36,159
Total	$ 24,450	$ 40,633
Residential mortgage-backed
Number of Issues
Less than 12 months \| issue	29	79
12 months or longer \| issue	103	131
Fair Value
Less than 12 months	$ 83,281	$ 318,810
12 months or longer	153,709	151,879
Total	236,990	470,689
Gross Unrealized Loss
Less than 12 months	463	4,549
12 months or longer	26,150	36,335
Total	$ 26,613	$ 40,884
Commercial mortgage-backed
Number of Issues
Less than 12 months \| issue	1	4
12 months or longer \| issue	0	0
Fair Value
Less than 12 months	$ 5,481	$ 8,198
12 months or longer	0	0
Total	5,481	8,198
Gross Unrealized Loss
Less than 12 months	10	44
12 months or longer	0	0
Total	$ 10	$ 44
Other asset-backed
Number of Issues
Less than 12 months \| issue	6	14
12 months or longer \| issue	3	2
Fair Value
Less than 12 months	$ 20,819	$ 32,645
12 months or longer	3,389	3,915
Total	24,208	36,560
Gross Unrealized Loss
Less than 12 months	104	804
12 months or longer	430	136
Total	$ 534	$ 940

UNITED FIRE GROUP INC 10-Q