Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Instruments (Detail)

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Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Instruments (Detail) (Level 3 [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Dec. 28, 2013
Level 3 [Member]
 
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Balance as of September 28, 2013 $ 4,165
Changes in the fair value of contingent performance-based payments established at the time of acquisition 0
Balance as of December 28, 2013 $ 4,165