Financing (Narrative) (Details) (USD $)	6 Months Ended
	Mar. 28, 2015	Sep. 27, 2014
Line of Credit Facility [Abstract]
Line of credit facility, borrowing capacity	$ 200,000,000
Line of credit facility, expiration date	Sep. 01, 2019
Total short-term borrowings	70,871,000	60,000,000
Letters of credit outstanding, amount	11,600,000	9,400,000
Line of credit facility, remaining borrowing capacity	$ 117,500,000	$ 130,600,000
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	1.18%	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%