v2.4.0.8
Investments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 0 Months Ended 8 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Jun. 29, 2013
Mascoma [Member]
Dec. 29, 2012
Mascoma [Member]
Aug. 31, 2010
BioProcess [Member]
Investment [Line Items]            
Significant Acquisitions and Disposals, Date of Transaction for Acquisition or Disposal           Aug. 31, 2010
Ownership Percentage Of Subsidiary           100.00%
Impairment of investments $ 21,495 $ 0 $ 0 $ 21,495    
Investment       $ 12,350 $ 33,845