Quarterly report pursuant to sections 13 or 15(d)

Long-Term Debt (Narrative) (Details)

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Long-Term Debt (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2012
Revolving Line of Credit and Term Note [Member]
Dec. 31, 2012
Revolving Line of Credit [Member] [Member]
Sep. 30, 2012
Revolving Line of Credit [Member] [Member]
Sep. 30, 2011
Revolving Line of Credit [Member] [Member]
Dec. 31, 2012
Revolving Line of Credit [Member] [Member]
Minimum [Member]
Dec. 31, 2012
Revolving Line of Credit [Member] [Member]
Maximum [Member]
Dec. 31, 2012
Revolving Line of Credit [Member] [Member]
Property [Member]
acre
Dec. 31, 2012
Term Loan [Member]
Sep. 30, 2012
Term Loan [Member]
Dec. 31, 2012
Term Loan [Member]
Property [Member]
acre
Dec. 31, 2012
Term Loan [Member]
Producing Citrus Groves [Member]
acre
Oct. 10, 2012
Mortgage Note Payable [Member]
Dec. 31, 2012
Mortgage Note Payable [Member]
acre
Sep. 30, 2012
Mortgage Note Payable [Member]
Debt Instrument [Line Items]                                
Principal balance outstanding $ 37,500 $ 39,900                 $ 37,500 $ 38,000          $ 1,900
Acres collateralized                 43,991     12,280 8,600   7,680  
Amount of credit facility     97,500 60,000                        
Annual commitment fee       0.15%                        
Estimated commitment fees       77                        
LIBOR spread       2.25%   2.50% 2.25% 2.75%   2.50%            
Periodic principal payment                   500            
Date of first required payment       Oct. 01, 2010           Oct. 01, 2011            
Scheduled maturity date       Oct. 01, 2020 Oct. 01, 2020         Oct. 01, 2020 Oct. 01, 2020       Mar. 01, 2014 Mar. 01, 2014
Term of credit facility       10 years                        
Minimum number of days notice required for rate change       30 days                        
Amount of debt extinguished                           1,794    
Prepayment penalty                           $ 66