Financing (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended
	Mar. 29, 2014	Mar. 29, 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	45,000,000	45,000,000	35,000,000
Letters of credit outstanding, amount	11,500,000	11,500,000	14,300,000
Line of credit facility, remaining borrowing capacity	$ 43,500,000	$ 43,500,000	$ 50,700,000
U.S. LIBOR plus, basis points	87.50%
Swing Line Of Credit [Member]
Line of Credit Facility [Abstract]
Line of credit facility, interest rate	3.25%	3.25%
Variable Rate Credit Facility [Member]
Line of Credit Facility [Abstract]
Line of credit facility, interest rate	1.035%	1.035%	1.065%