Document And Entity Information (USD $)	12 Months Ended
	Jan. 03, 2012	Mar. 01, 2012	Jul. 12, 2011
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 03, 2012
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Entity Registrant Name	JAMBA, INC.
Entity Central Index Key	0001316898
Trading Symbol	JMBA
Entity Filer Category	Accelerated Filer
Current Fiscal Year End Date	--01-03
Entity Common Stock, Shares Outstanding		67,292,829
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 131,137,867
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No