Document And Entity Information (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Mar. 05, 2015
Document And Entity Information [Abstract]
Document Type		10-K
Amendment Flag		false
Document Period End Date		Dec. 31, 2014
Document Fiscal Year Focus		2014
Document Fiscal Period Focus		FY
Trading Symbol		SASR
Entity Common Stock, Shares Outstanding			24,894,506
Entity Listing, Par Value Per Share	$ 1
Entity Registrant Name		SANDY SPRING BANCORP INC
Entity Central Index Key		0000824410
Current Fiscal Year End Date		--12-31
Entity Well-known Seasoned Issuer		No
Entity Voluntary Filers		No
Entity Current Reporting Status		Yes
Entity Filer Category		Accelerated Filer
Entity Public Float	$ 610,000,000