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Fair Value Measurements (Details Textual) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2012
Jul. 31, 2012
Jan. 31, 2012
Limoneira [Member]
Jul. 31, 2011
Limoneira [Member]
Jul. 31, 2012
Limoneira [Member]
Jul. 31, 2011
Limoneira [Member]
Oct. 31, 2011
Limoneira [Member]
Fair Value Assets and Liabilities (Textual) [Abstract]              
Percentage of outstanding shares of Limoneira's shares owned         15.00%    
Limoneira's stock price     $ 17.90       $ 17.35
Unrealized investment holding gains     $ 1.9 $ 2.2 $ 1.0 $ 0.8  
Fair Value Assets and Liabilities (Additional Textual) [Abstract]              
Net increase to contingent considerations $ 0.20 $ 0.45