Debt Including Capital Lease Obligations - Build-to-suit Lease (Details) (USD $) In Thousands, unless otherwise specified						1 Months Ended
	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013	Jun. 30, 2012 U.S. Midwest Salad production and warehousing facility facility renewal_option	Mar. 31, 2014 U.S. Midwest Salad production and warehousing facility	Mar. 31, 2014 U.S. Midwest Portion placed into service Long-term Debt [Member]	Dec. 31, 2013 U.S. Midwest Portion placed into service Long-term Debt [Member]	Mar. 31, 2013 U.S. Midwest Construction in progress Other liabilities
Capital Leased Assets [Line Items]
Lease term						20 years
Number of facilities that the leased facility will replace						3
Number of lease extensions						2
Lease extension term						5 years
Lessee Leasing Arrangements, Capital Leases, Discount Rate							6.30%
Capital lease obligations	$ 42,477	[1]	$ 39,025	[1]	$ 690			$ 42,000	$ 38,000	$ 34,000

[1] Capital lease obligations at March 31, 2014 and December 31, 2013 include the borrowings for the salad production and warehousing facility in the Midwest. See further description of the build-to-suit lease below