v2.4.0.8
Document and Entity Information
3 Months Ended
Aug. 02, 2015
Sep. 04, 2015
Document and Entity Information [Abstract]    
Entity Registrant Name FINISAR CORP  
Entity Central Index Key 0001094739  
Current Fiscal Year End Date --05-01  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Aug. 02, 2015  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   106,590,450