Annual report pursuant to Section 13 and 15(d)

Acquisition and Dispositions - Sugarcane Land (Details)

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Acquisition and Dispositions - Sugarcane Land (Details)
 12 Months Ended
May. 01, 2015
USD ($)
Nov. 21, 2014
USD ($)
a
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Apr. 03, 2015
USD ($)
Long Lived Assets Held-for-sale [Line Items]            
Cash payment for land           $ 1,509,000
Deferred gain on sale     $ 29,122,000 $ 0    
Net gain on sale     16,517,000 $ 4,821,000 $ 20,299,000  
Lease            
Long Lived Assets Held-for-sale [Line Items]            
Deferred gain on sale     17,300      
Payments $ 1,347,000          
Interest expense     607,000      
Lease | Prepaid Expenses and Other Current Assets            
Long Lived Assets Held-for-sale [Line Items]            
Prepaid expenses and other current assets     $ 843,000      
Global            
Long Lived Assets Held-for-sale [Line Items]            
Land held for sale (in acres) | a   36,000        
Cash payment for land   $ 97,900,000        
Net cash proceeds from the sugarcane land sale   97,126,000        
Post-closing adjustment period     10 years      
Gain on sale   42,753,000        
Deferred gain on sale   $ 29,140,000        
Global | Other Income (Expense)            
Long Lived Assets Held-for-sale [Line Items]            
Net gain on sale     $ 13,613,000      
Global | Lease            
Long Lived Assets Held-for-sale [Line Items]            
Land held for sale (in acres) | a   30,600