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Stockholders' Equity and Stock Compensation Plans (Details) (USD $)
12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Oct. 02, 2011
Sep. 29, 2013
Stock options
Sep. 29, 2013
RSUs
Sep. 30, 2012
RSUs
Sep. 29, 2013
Restricted Stock
Sep. 29, 2013
2003 Outside Director Stock Option Plan
Sep. 29, 2013
2003 Outside Director Stock Option Plan
Minimum
Sep. 29, 2013
EIP
Mar. 31, 2006
EIP
Stock options
Sep. 29, 2013
EIP
Stock options
Sep. 29, 2013
EIP
RSUs
Sep. 29, 2013
EIP
Restricted Stock
Sep. 29, 2013
ESPP
Sep. 30, 2012
ESPP
Oct. 02, 2011
ESPP
Stockholder's equity and stock compensation plans                                  
Available for future awards       3,400,000     938,114 400,000   6,086,216         2,373,290    
Percentage of market value on the grant date at which participant has option to purchase common stock                 100.00%                
Expiration period               10 years     10 years 8 years          
Vesting period         4 years 4 years         4 years     3 years      
Percentage of vesting rights after specified period                     25% on the first anniversary of the grant date, and the balance vests monthly thereafter 25% on each anniversary of the grant date 25% on each anniversary of the grant date        
Maximum amount that an employee can contribute during a purchase right period                             $ 5,000    
Exercise price as percentage of fair market value on the first day of purchase right period                             100.00%    
Exercise price as percentage of fair market value on the last day of purchase right period                             85.00%    
Stock-based compensation and related income tax benefits                                  
Stock-based compensation expense 8,775,000 10,839,000 10,582,000                       800,000 900,000 1,000,000
Income tax benefit related to stock-based compensation (3,048,000) (4,288,000) (3,804,000)                            
Stock-based compensation, net of tax benefit $ 5,727,000 $ 6,551,000 $ 6,778,000