Annual report pursuant to Section 13 and 15(d)

Acquisitions and Dispositions - Acquisition of Orange-Co, LP Assets (Details)

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Acquisitions and Dispositions - Acquisition of Orange-Co, LP Assets (Details)
 12 Months Ended
Dec. 01, 2015
USD ($)
Dec. 02, 2014
USD ($)
a
Dec. 01, 2014
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Business Acquisition [Line Items]            
Additional consideration       $ 0 $ 0 $ 265,587,000
Citree            
Business Acquisition [Line Items]            
Ownership interest (as a percent)   51.00%        
Orange-Co            
Business Acquisition [Line Items]            
Area of land acquired (in acres) | a   20,263        
Cost of total assets acquired   $ 277,792,000        
Cash acquired   2,060,000        
Fair value attributable to noncontrolling interest   4,838,000        
Initial cash consideration   147,500,000        
Additional cash consideration (up to)   7,500,000        
Term loan debt   500,000        
Other liabilities   4,705,000        
Standby letter of credit issued     $ 7,500,000      
Additional consideration $ 3,750,000 97,126,000        
Orange-Co | General and Administrative Expense            
Business Acquisition [Line Items]            
Professional and legal costs       $ 0 $ 31,000  
Orange-Co | Refinancing Debt            
Business Acquisition [Line Items]            
Term loan debt   92,290,000        
Working capital facility   $ 27,857,000