Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2017	May 31, 2017	Sep. 30, 2016
Document And Entity Information
Entity Registrant Name	GSI TECHNOLOGY INC
Entity Central Index Key	0001126741
Document Type	10-K
Document Period End Date	Mar. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 74.1
Entity Common Stock, Shares Outstanding		20,979,452
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017