Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Summary of Stock Option Activity (Detail)

v2.4.0.8
Stock-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Beginning Balance, Outstanding, Number of Shares 12,571    
Granted, Number of Shares 248    
Exercised, Number of Shares (705)    
Cancelled or expired, Number of Shares (2,901)    
Ending Balance, Outstanding, Number of Shares 9,213 12,571  
Exercisable, Number of Shares 5,205 6,409 4,601
Expected to vest, Number of Shares 3,390    
Beginning Balance, Outstanding, Weighted Average Exercise Price per share $ 10.57    
Granted, Weighted Average Exercise Price per share $ 7.72    
Exercised, Weighted Average Exercise Price per share $ 6.14    
Cancelled or expired, Weighted Average Exercise Price per share $ 12.09    
Ending Balance, Outstanding, Weighted Average Exercise Price per share $ 10.35 $ 10.57  
Exercised, Weighted Average Exercise Price per share $ 10.81 $ 11.21 $ 11.34
Expected to vest, Weighted Average Exercise Price per share $ 9.77    
Outstanding, Weighted Average Remaining Contractual Life 3 years 3 years  
Exercisable, Weighted Average Remaining Contractual Life 2 years 2 years 2 years
Expected to vest, Weighted Average Remaining Contractual Life 3 years    
Ending Balance, Outstanding, Aggregate Intrinsic Value $ 1,895    
Exercisable, Aggregate Intrinsic Value 390 770 6,708
Expected to Vest, Aggregate Intrinsic Value $ 1,272