Annual report pursuant to section 13 and 15(d)

Document and Entity Information

Document and Entity Information (USD $)
12 Months Ended
Sep. 30, 2012
Nov. 29, 2012
Mar. 31, 2012
Document and Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Sep. 30, 2012    
Entity Registrant Name ALICO INC    
Entity Central Index Key 0000003545    
Current Fiscal Year End Date --09-30    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   7,358,324  
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Public Float     $ 54,180,702