Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

v2.4.0.6
Document And Entity Information (USD $)
 12 Months Ended
Jul. 31, 2012
Oct. 01, 2012
Jan. 31, 2012
Document and Entity Information [Abstract]      
Entity Registrant Name ENZO BIOCHEM INC    
Document Type 10-K    
Current Fiscal Year End Date --07-31    
Entity Common Stock, Shares Outstanding   39,278,919  
Entity Public Float     $ 90,665,000
Amendment Flag false    
Entity Central Index Key 0000316253    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Document Period End Date Jul. 31, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY