Segment Information (Schedule of Capital Expenditures and Depreciation by Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures	$ 15,921	$ 12,265	$ 8,203
Total depreciation, depletion and amortization	8,429	7,327	7,221
Alico Fruit Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures	389	65	373
Total depreciation, depletion and amortization	223	213	315
Citrus Groves Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures	1,562	2,102	1,273
Total depreciation, depletion and amortization	2,088	1,977	2,021
Sugarcane Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures	10,482	4,633	3,586
Total depreciation, depletion and amortization	4,051	2,873	1,713
Cattle Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures	741	1,214	1,260
Total depreciation, depletion and amortization	992	937	1,292
Land leasing and rentals Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures		16	62
Total depreciation, depletion and amortization	427	481	546
All Segments [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures	13,164	8,030	6,554
Total depreciation, depletion and amortization	7,781	6,481	5,887
Non - Segments [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total capital expenditures	2,748	4,235	1,649
Total depreciation, depletion and amortization	$ 648	$ 846	$ 1,334