Business Acquisitions, Investments and Redeemable Noncontrolling Interests (Details 3) (BioProcess Algae [Member], USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
May 01, 2008	Mar. 02, 2013	Mar. 03, 2012	Dec. 01, 2012
BioProcess Algae [Member]
Schedule of Cost-method Investments [Line Items]
Name of Investment	BioProcess Algae LLC
Cost Method Investment, Ownership Percentage	14.85%
Cost Method Investment, Additional Amount Invested		$ 223	$ 99
Investment-related Liabilities		0		223
Cost Method Investments, Carrying Amount		1,812		1,812
Investment Income, Dividend		$ 0	$ 1,200

This item represents the aggregate carrying amount of all cost-method investments as reported on or included in the balance sheet. The original cost of the investments may differ from the aggregate carrying amount disclosed due to various adjustments such as: (i) dividends received in excess of earnings after the date of investment that are considered a return of investment and therefore recorded as reductions to cost of the investment, or (ii) a series of operating losses of an investee or other factors which may indicate that a decrease in value of the investment has occurred which is other than temporary and accordingly such decrease in value has been recognized.

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