Property, Buildings and Equipment, Net (Schedule of Property, Buildings and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013
Property, Plant and Equipment [Line Items]
Net property, buildings and equipment	$ 130,867	$ 131,071
Depreciable Assets [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	131,101	121,486
Less accumulated depreciation and depletion	(75,728)	(71,857)
Net property, buildings and equipment	55,373	49,629
Breeding herd [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	11,659	12,234
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	13,670	11,587
Citrus trees [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	29,164	34,188
Sugarcane [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	18,846	16,199
Equipment and Other Facilities [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	57,762	47,278
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	$ 75,494	$ 81,442