Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2011	Mar. 07, 2012	Jun. 30, 2011
Entity Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Trading Symbol	UFCS
Entity Registrant Name	UNITED FIRE GROUP INC
Entity Central Index Key	0000101199
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		25,506,809
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 372,681,983