Property, Buildings and Equipment, Net (Schedule of Property, Buildings and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Property, Plant and Equipment [Line Items]
Property, buildings and equipment, net	$ 122,834	$ 128,780
Breeding Herd [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	10,062	10,799
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	10,975	10,925
Citrus Trees [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	33,164	35,939
Sugarcane [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	12,617	10,462
Equipment and other facilities [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	42,043	40,708
Total Depreciable Properties [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	108,861	108,833
Less accumulated depreciation and depletion	65,220	65,104
Property, buildings and equipment, net	43,641	43,729
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	$ 79,193	$ 85,051