Document and Entity Information	9 Months Ended
	Sep. 30, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	SEACOAST BANKING CORP OF FLORIDA
Entity Central Index Key	0000730708
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding	94,810,684