| 
           Related Party Transactions (Details) (USD $) 
        In Thousands, except Share data, unless otherwise specified  | 
        3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|
| 
           Mar. 31, 2014
 
          734 Agriculture [Member] 
         | 
        
           Sep. 30, 2013
 
          Atlanticblue [Member] 
         | 
        
           Mar. 31, 2014
 
          Silver Nip [Member] 
         | 
        
           Mar. 31, 2014
 
          Silver Nip [Member] 
         | 
        
           Mar. 31, 2014
 
          JD Alexander [Member] 
         | 
        
           Mar. 31, 2013
 
          Tri County Groves, LLC [Member]
 
          Alico Fruit [Member]
 
          boxes 
         | 
        
           Mar. 31, 2013
 
          Tri County Groves, LLC [Member]
 
          Alico Fruit [Member]
 
          boxes 
         | 
        
           Mar. 31, 2014
 
          Charles Palmer [Member]
 
          acre 
         | 
      |
| Related Party Transaction [Line Items] | ||||||||
| Ownership interest in subsidiary | 51.00% | 51.00% | ||||||
| Number of shares owned | 3,725,457 | |||||||
| Number of boxes of fruit marketed | 115,351 | 145,584 | ||||||
| Related party revenue | $ 1,056 | $ 1,307 | ||||||
| Amount of transaction | $ 38 | $ 53 | $ 2,000 | $ 33 | ||||
| Term of agreement | 2 years | |||||||
| Acres of land leased | 2,300 | |||||||
| X | ||||||||||
| 
             
- Definition 
          Related Party Transaction, Boxes Of Fruit Marketed By Related Party. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Balance held at close of period in number of shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Net rentable area for properties owned. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Amount of transactions with related party during the financial reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          A description of the related party transaction, including transactions to which no amounts or nominal amounts were ascribed and such other information deemed necessary to an understanding of the effects of the transactions on the financial statements. Examples of common related party transactions are, sales, purchases and transfers of realty and personal property, services received or furnished, loans and leases to and from top management and affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
        
| X | ||||||||||
| 
             
- Details 
          
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  |