Document and Entity Information Document	9 Months Ended
	Mar. 29, 2013	Apr. 30, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	SILICON GRAPHICS INTERNATIONAL CORP.
Entity Central Index Key	0001316625
Current Fiscal Year End Date	--06-28
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 29, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		33,821,838