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Stockholders' Equity and Stock Compensation Plans (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Jul. 02, 2017
Jun. 26, 2016
Jul. 02, 2017
Jun. 26, 2016
Stockholders' Equity and Stock Compensation Plans        
Stock-based compensation expense $ 3.4 $ 3.2 $ 10.0 $ 9.3
Non-employee directors and executive officers        
Stockholders' Equity and Stock Compensation Plans        
Options granted (in shares)     183,163  
Exercise price of stock options granted (in dollars per share)     $ 40.67  
Weighted-average fair value of stock options granted (in dollars per share)     $ 12.35  
Stock options | Executive officers        
Stockholders' Equity and Stock Compensation Plans        
Vesting period     4 years  
Stock options | Non-employee director        
Stockholders' Equity and Stock Compensation Plans        
Vesting period     1 year  
Performance-based restricted stock        
Stockholders' Equity and Stock Compensation Plans        
Percentage of shares that ultimately vest depending on growth in diluted earnings per share     50.00%  
Percentage of shares that ultimately vest depending on the shareholder return relative to peer group of companies over vesting period     50.00%  
Performance-based restricted stock | Non-employee directors and executive officers        
Stockholders' Equity and Stock Compensation Plans        
Granted (in shares)     99,180  
Granted, fair value (in dollars per share)     $ 48.36  
Vesting period     3 years  
Time-based restricted stock | Non-employee directors, executive officers and employees        
Stockholders' Equity and Stock Compensation Plans        
Granted (in shares)     220,241  
Granted, fair value (in dollars per share)     $ 40.82  
Time-based restricted stock | Non-employee director        
Stockholders' Equity and Stock Compensation Plans        
Vesting period     1 year  
Time-based restricted stock | Executive officers and employees        
Stockholders' Equity and Stock Compensation Plans        
Vesting period     4 years