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Document and Entity Information - USD ($)
12 Months Ended
May 31, 2017
Jul. 31, 2017
Nov. 30, 2016
Document And Entity Information      
Entity Registrant Name AEHR TEST SYSTEMS    
Entity Central Index Key 0001040470    
Document Type 10-K    
Document Period End Date May 31, 2017    
Amendment Flag false    
Current Fiscal Year End Date --05-31    
Is Entity a Well-known Seasoned Issuer? No    
Is Entity a Voluntary Filer? No    
Is Entity's Reporting Status Current? Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 39,151,174
Entity Common Stock, Shares Outstanding   214,170,11.  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017