Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

v2.4.1.9
Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Sep. 30, 2014
Inventory [Line Items]    
Total Inventories $ 49,971us-gaap_InventoryNet $ 19,929us-gaap_InventoryNet
Orange Groves [Member]    
Inventory [Line Items]    
Agricultural related inventory 45,702us-gaap_AgriculturalRelatedInventoryGrowingCrops
/ us-gaap_PublicUtilitiesInventoryAxis
= naics_ZZ111310
18,305us-gaap_AgriculturalRelatedInventoryGrowingCrops
/ us-gaap_PublicUtilitiesInventoryAxis
= naics_ZZ111310
Beef Cattle Ranching and Farming [Member]    
Inventory [Line Items]    
Agricultural related inventory 1,750us-gaap_AgriculturalRelatedInventoryGrowingCrops
/ us-gaap_PublicUtilitiesInventoryAxis
= naics_ZZ112111
1,022us-gaap_AgriculturalRelatedInventoryGrowingCrops
/ us-gaap_PublicUtilitiesInventoryAxis
= naics_ZZ112111
Nursery Inventory [Member]    
Inventory [Line Items]    
Other 1,625us-gaap_OtherInventory
/ us-gaap_PublicUtilitiesInventoryAxis
= alco_NurseryInventoryMember
516us-gaap_OtherInventory
/ us-gaap_PublicUtilitiesInventoryAxis
= alco_NurseryInventoryMember
Other Inventory [Member]    
Inventory [Line Items]    
Other $ 894us-gaap_OtherInventory
/ us-gaap_PublicUtilitiesInventoryAxis
= alco_OtherInventoryMember
$ 86us-gaap_OtherInventory
/ us-gaap_PublicUtilitiesInventoryAxis
= alco_OtherInventoryMember