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Acquisitions and Dispositions - Schedule of Unaudited Pro-forma Information (Details) - Orange-Co - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014
Business Acquisition [Line Items] |  |
Revenues | $ 153,654 | $ 175,420
Income from operations | 19,489 | 35,450
Net income attributable to Alico Inc. common stockholders | $ 12,723 | $ 22,906
Basic earnings per common share (in dollars per share) | $ 1.58 | $ 3.12
Diluted earnings per common share (in dollars per share) | $ 1.58 | $ 3.12

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