Document And Entity Information (USD $)	12 Months Ended
	May 31, 2012	Aug. 09, 2012
Document Type	10-K
Amendment Flag	false
Document Period End Date	May 31, 2012
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2012
Entity Registrant Name	SCHIFF NUTRITION INTERNATIONAL, INC.
Entity Central Index Key	0001022368
Current Fiscal Year End Date	--05-31
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float		$ 158,759,834
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		21,807,164
Class B Common Stock [Member]
Entity Common Stock, Shares Outstanding		7,486,574