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12. SUBSEQUENT EVENT (Details) (Cypress Semiconductor Litigation, Subsequent Event)
0 Months Ended
May 06, 2015
claim
Cypress Semiconductor Litigation | Subsequent Event
 
Subsequent Event [Line Items]  
Claims settled number 2us-gaap_LossContingencyClaimsSettledNumber
/ us-gaap_LitigationCaseAxis
= gsit_CypressSemiconductorLawsuitMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember