Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.20.4
Document and Entity Information - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Mar. 03, 2021
Jun. 30, 2020
Document and Entity Information      
Document Type 10-K    
Document Period End Date Dec. 31, 2020    
Entity Registrant Name Synthetic Biologics, Inc.    
Title of 12(b) Security Common Stock    
Security Exchange Name NYSE    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   129,654,575  
Entity Central Index Key 0000894158    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Amendment Flag false    
Trading Symbol SYN    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Public Float     $ 8,460