Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Inventory, Net [Abstract]
Finished goods	$ 70,155	$ 65,084	$ 69,411
Growing crops	76,702	75,412	74,356
Raw materials, supplies and other	58,775	56,811	67,544
Inventory, net	$ 205,632	$ 197,307	$ 211,311