v3.3.1.900
Document and Entity Information - shares
6 Months Ended
Dec. 31, 2015
Jan. 22, 2016
Document And Entity Information [Abstract]    
Entity Registrant Name EXTREME NETWORKS INC  
Entity Central Index Key 0001078271  
Current Fiscal Year End Date --06-30  
Entity Filer Category Accelerated Filer  
Document Type 10-Q  
Document Period End Date Dec. 31, 2015  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q2  
Trading Symbol EXTR  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   103,319,359