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Employee Benefit Plans Employee Benefit Plans (Defined Contribution Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 02, 2016
Jul. 04, 2015
Jul. 02, 2016
Jul. 04, 2015
Defined Contribution Plan Disclosure        
Defined contribution plan expense $ 5,328 $ 5,302 $ 15,237 $ 15,544
United States        
Defined Contribution Plan Disclosure        
Defined contribution plan expense 3,832 3,483 10,632 10,426
Foreign        
Defined Contribution Plan Disclosure        
Defined contribution plan expense $ 1,496 $ 1,819 $ 4,605 $ 5,118