Property, Buildings and Equipment, Net (Schedule of Property, Buildings and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012
Property, Plant and Equipment [Line Items]
Property, buildings and equipment, net	$ 128,577	$ 122,834
Depreciable Assets [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	115,612	108,861
Less accumulated depreciation and depletion	66,999	65,220
Property, buildings and equipment, net	48,613	43,641
Breeding herd [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	11,728	10,062
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	10,982	10,975
Citrus trees [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	33,390	33,164
Sugarcane [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	15,944	12,617
Equipment and Other Facilities [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	43,568	42,043
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	$ 79,964	$ 79,193