Schedule II. Condensed Financial Statements of Parent Company (Condensed Statement of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net income (loss)	$ (29,700)	$ 15,031	$ 80,594
Adjustments to reconcile net income to net cash provided by operating activities
Other, net	2,901	7,928	(7,637)
Cash from operating activities	201,436	(16,282)	(50,677)
Net cash provided by (used in) operating activities	171,736	(1,251)	29,917
Cash flows from investing activities
Net cash provided by (used in) investing activities	(149,886)	(19,171)	31,731
Cash flows from financing activities
Repurchase of common stock	0	0	(2,007)
Issuance of common stock	(290)	828	(421)
Net cash provided by (used in) financing activities	(16,454)	(15,032)	(17,492)
Net Change in Cash and Cash Equivalents	5,396	(35,454)	44,156
Cash and Cash Equivalents at Beginning of Year	96,650	132,104	87,948
Cash and Cash Equivalents at End of Year	102,046	96,650	132,104
United Fire Group, Inc.
Cash flows from operating activities
Net income (loss)	(29,700)	15,031	80,594
Adjustments to reconcile net income to net cash provided by operating activities
Equity in net income of subsidiary	29,778	(14,964)	(80,579)
Dividends received from subsidiary	13,200	12,000	10,000
Other, net	1,691	2,845	3,131
Cash from operating activities	44,669	(119)	(67,448)
Net cash provided by (used in) operating activities	14,969	14,912	13,146
Cash flows from investing activities
Net cash provided by (used in) investing activities	0	0	0
Cash flows from financing activities
Payment of cash dividends	(16,164)	(15,860)	(15,064)
Repurchase of common stock	0	0	(2,007)
Issuance of common stock	(290)	828	(421)
Net cash provided by (used in) financing activities	(16,454)	(15,032)	(17,492)
Net Change in Cash and Cash Equivalents	(1,485)	(120)	(4,346)
Cash and Cash Equivalents at Beginning of Year	2,038	2,158	6,504
Cash and Cash Equivalents at End of Year	$ 553	$ 2,038	$ 2,158