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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Treasury Stock
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Oct. 03, 2015   33,500,000        
Beginning balance at Oct. 03, 2015 $ 842,272 $ 506 $ 497,488 $ (509,968) $ 860,717 $ (6,471)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 76,427       76,427  
Other comprehensive income (loss) $ (5,068)         (5,068)
Treasury shares purchased (in shares) (760,903) (761,000)        
Treasury shares purchased $ (30,000)     (30,000)    
Share-based compensation expense 19,341   19,341      
Exercise of stock options, including tax benefits (in shares)   718,000        
Exercise of stock options, including tax benefits 13,825 $ 7 13,818      
Ending balance (in shares) at Oct. 01, 2016   33,457,000        
Ending balance at Oct. 01, 2016 916,797 $ 513 530,647 (539,968) 937,144 (11,539)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 112,062       112,062  
Other comprehensive income (loss) 6,560         6,560
Treasury shares purchased (in shares)   (655,000)        
Treasury shares purchased (34,136)     (34,136)    
Share-based compensation expense 17,411   17,411      
Exercise of stock options, including tax benefits (in shares)   662,000        
Exercise of stock options, including tax benefits $ 7,245 $ 6 7,239      
Ending balance (in shares) at Sep. 30, 2017 33,464,000 33,464,000        
Ending balance at Sep. 30, 2017 $ 1,025,939 $ 519 555,297 (574,104) 1,049,206 (4,979)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 13,040       13,040  
Other comprehensive income (loss) (7,000)         (7,000)
Treasury shares purchased (in shares)   (2,259,000)        
Treasury shares purchased (137,034)     (137,034)    
Share-based compensation expense 17,981   17,981      
Exercise of stock options, including tax benefits (in shares)   633,000        
Exercise of stock options, including tax benefits $ 8,217 $ 7 8,210      
Ending balance (in shares) at Sep. 29, 2018 31,838,000 31,838,000        
Ending balance at Sep. 29, 2018 $ 921,143 $ 526 $ 581,488 $ (711,138) $ 1,062,246 $ (11,979)