Financing (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
	Jun. 28, 2014	Jun. 28, 2014	Sep. 28, 2013
Line of Credit Facility [Abstract]
Line of credit facility, borrowing capacity	$ 100,000,000	$ 100,000,000
Line of Credit Facility, Expiration Date		Sep. 01, 2017
Total short-term borrowings	65,000,000	65,000,000	35,000,000
Letters of credit outstanding, amount	9,700,000	9,700,000	14,300,000
Line of credit facility, remaining borrowing capacity	$ 25,300,000	$ 25,300,000	$ 50,700,000
U.S. LIBOR plus, basis points	0.875%
Variable Rate Credit Facility [Member]
Line of Credit Facility [Abstract]
Line of credit facility, interest rate	1.035%	1.035%	1.065%