Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 28, 2014	Jun. 30, 2013
Document And Entity Information
Entity Registrant Name	SUMMIT FINANCIAL GROUP INC
Entity Central Index Key	0000811808
Document Type	10-K
Amendment Flag	false
Entity Filer Category	Smaller Reporting Company
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2013
Entity Common Stock, Shares Outstanding		7,454,222
Public Float			$ 46,147,000
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2013
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No