Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
12 Months Ended
Sep. 30, 2015
Dec. 01, 2015
Mar. 31, 2015
Document And Entity Information [Abstract]      
Entity Registrant Name Stellar Biotechnologies, Inc.    
Entity Central Index Key 0001540159    
Document Type 10-K    
Document Period End Date Sep. 30, 2015    
Amendment Flag false    
Current Fiscal Year End Date --09-30    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 67,359,983
Entity Common Stock, Shares Outstanding   8,424,758  
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Trading Symbol SBOT