Property, Buildings and Equipment, Net (Schedule of Property, Buildings and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]
Net property, buildings and equipment	$ 132,248	$ 122,834
Depreciable Assets [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	120,602	108,861
Less accumulated depreciation and depletion	(70,101)	(65,220)
Net property, buildings and equipment	50,501	43,641
Breeding herd [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	12,943	10,062
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	11,594	10,975
Citrus trees [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	33,955	33,164
Sugarcane [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	15,834	12,617
Equipment and Other Facilities [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	46,276	42,043
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	$ 81,747	$ 79,193