Quarterly report pursuant to Section 13 or 15(d)

Business Combinations - Additional Information (Detail)

v2.4.0.8
Business Combinations - Additional Information (Detail) (USD $)
Dec. 28, 2013
Sep. 28, 2013
Dec. 29, 2012
Business Acquisition [Line Items]      
Excess of purchase price recorded as goodwill $ 205,756,000 $ 205,756,000 $ 210,223,000
FourStar Microbial [Member]
     
Business Acquisition [Line Items]      
Acquired remaining majority interest in cash     4,835,000
Contingent future performance-based payments     4,200,000
Excess of purchase price recorded as goodwill     $ 3,243,000