Segment, Geographic And Customers Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Segment Reporting Information [Line Items]
Number of reportable segments	3	3
Major customer, percentage of sales	20.00%		20.00%
Joint Venture [Member]
Segment Reporting Information [Line Items]
Percentage of joint venture owned	50.00%
Fresh Dairy Direct [Member]
Segment Reporting Information [Line Items]
Number of manufacturing facilities	77
Morningstar [Member]
Segment Reporting Information [Line Items]
Number of manufacturing facilities	12