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Fair Value Measurements (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Limoneira        
Assets at Fair Value:        
Realized gain (loss) $ (5,100)   $ (8,200)  
Unrealized gains (losses) recorded   $ 6,900   $ 6,800
Limoneira | Maximum [Member]        
Assets at Fair Value:        
Non-equity method investment ownership (as a percent) 10.00%   10.00%  
Fair Value, Measurements, Recurring [Member]        
Assets at Fair Value:        
Total assets at fair value $ 33,194   $ 33,194  
Fair Value, Measurements, Recurring [Member] | Limoneira        
Assets at Fair Value:        
Investment in Limoneira Company 33,194   33,194  
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]        
Assets at Fair Value:        
Total assets at fair value 33,194   33,194  
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Limoneira        
Assets at Fair Value:        
Investment in Limoneira Company $ 33,194   $ 33,194