Inventories (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Inventory, Net [Abstract]
Finished goods	$ 69,411	$ 69,450	$ 67,908
Growing crops	74,356	74,985	78,951
Raw materials, supplies and other	67,544	66,129	71,576
Inventory, net	$ 211,311	$ 210,564	$ 218,435