Annual report pursuant to Section 13 and 15(d)

Debt - Debt Prior to Refinancing (Details)

v3.3.1.900
Debt - Debt Prior to Refinancing (Details) - USD ($)
 12 Months Ended
Dec. 03, 2014
Dec. 02, 2014
Sep. 30, 2014
Sep. 30, 2010
Sep. 30, 2015
Line of Credit Facility [Line Items]          
Interest rate term loans     $ 61,640,000   $ 205,881,000
Outstanding balance     3,160,000   0
Debt financing costs $ 2,834,000        
Deferred financing costs         2,543,000
Rabo Agrifinance, Inc. variable rate term loan. The loan was refinanced on December 3, 2014.          
Line of Credit Facility [Line Items]          
Revolving line of credit   $ 60,000,000      
Outstanding balance     $ 0    
Deferred financing costs         318,000
Rabo Agrifinance, Inc. variable rate term loan. The loan was refinanced on December 3, 2014. | One Month LIBOR          
Line of Credit Facility [Line Items]          
LIBOR spread 1.95%   1.95%    
Rabo Agrifinance, Inc. variable rate term loan. The loan was refinanced on December 3, 2014. | One Month LIBOR | Minimum          
Line of Credit Facility [Line Items]          
LIBOR spread   1.95%      
Rabo Agrifinance, Inc. variable rate term loan. The loan was refinanced on December 3, 2014. | One Month LIBOR | Maximum          
Line of Credit Facility [Line Items]          
LIBOR spread   2.95%      
Rabo Agrifinance, Inc. variable rate term loan. The loan was refinanced on December 3, 2014. | LIBOR          
Line of Credit Facility [Line Items]          
Annual commitment fee (as a percent)   0.20%      
Rabio Agrifinance Inc          
Line of Credit Facility [Line Items]          
Debt financing costs       $ 1,202,000  
Deferred financing costs $ 318,000 $ 697,000      
Write off amount 379,000        
Metropolitan Life Insurance Company and New England Life Insurance Company variable rate term loans in the original principal amounts of $57,500,000: the variable interest rate was approximately 1.80% per annum as of September 30, 2015. The loans are collateralized by real estate and mature in November 2029.          
Line of Credit Facility [Line Items]          
Interest rate term loans $ 57,500,000 33,500,000 $ 0   $ 55,344,000
Quarterly principal payments   $ 500,000      
Variable interest rate     2.40%   1.80%
Metropolitan Life Insurance Company and New England Life Insurance Company variable rate term loans in the original principal amounts of $57,500,000: the variable interest rate was approximately 1.80% per annum as of September 30, 2015. The loans are collateralized by real estate and mature in November 2029. | One Month LIBOR          
Line of Credit Facility [Line Items]          
LIBOR spread   2.25%