Document And Entity Information	3 Months Ended
	Mar. 30, 2013	Apr. 25, 2013
Document And Entity Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Entity Registrant Name	SNYDER'S-LANCE, INC.
Entity Central Index Key	0000057528
Current Fiscal Year End Date	--12-28
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		69,161,527