Annual report pursuant to Section 13 and 15(d)

Acquisitions and Dispositions - Sugarcane Land Disposition (Details)

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Acquisitions and Dispositions - Sugarcane Land Disposition (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Nov. 21, 2014
USD ($)
a
May 31, 2016
USD ($)
May 31, 2015
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Long Lived Assets Held-for-sale [Line Items]            
Deferred gain on sale       $ 28,440 $ 29,122  
Net gain on sale       618 13,590 $ 7,748
Gain on sale of assets       (147) 290 $ 6,742
Lease            
Long Lived Assets Held-for-sale [Line Items]            
Payments   $ 1,702 $ 1,347      
Interest expense       1,406    
Gain on sale of assets       618    
Lease | Prepaid Expenses and Other Current Assets            
Long Lived Assets Held-for-sale [Line Items]            
Prepaid expenses and other current assets       $ 1,236    
Global            
Long Lived Assets Held-for-sale [Line Items]            
Land held for sale (in acres) | a 36,000          
Cash payment for land $ 97,900          
Net cash proceeds from the sugarcane land sale $ 97,126          
Post-closing adjustment period 10 years          
Gain on sale $ 42,753          
Deferred gain on sale 29,140          
Maximum exposure to loss on a aggregate undiscounted basis $ 42,172          
Percentage of estimated maximum exposure to loss 5.00%          
Global | Other Income (Expense)            
Long Lived Assets Held-for-sale [Line Items]            
Net gain on sale         $ 13,613  
Global | Lease            
Long Lived Assets Held-for-sale [Line Items]            
Land held for sale (in acres) | a 30,600