Financing (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 27, 2015	Sep. 27, 2014
Line of Credit Facility [Abstract]
Line of credit facility, borrowing capacity	$ 200,000
Line of credit facility, expiration date	Sep. 01, 2019
Total short-term borrowings	$ 36,202	$ 60,000
Letters of credit outstanding, amount	12,600	9,400
Line of credit facility, remaining borrowing capacity	$ 151,200	$ 130,600
Variable Rate Credit Facility [Member] | Bank Line Of Credit, Monthly U.S. LIBOR Plus 100 Basis Points [Member]
Line of Credit Facility [Abstract]
Line of credit facility, interest rate	1.19%	1.15%
Variable Rate Credit Facility [Member] | Bank Line Of Credit, Montly Euro LIBOR Plus 100 Basis Points [Member]
Line of Credit Facility [Abstract]
Line of credit facility, interest rate	1.00%