Retirement Benefit Plan (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits	$ (109)		$ 82
Expected rate of return on plan assets	5.50%	5.20%	5.50%	5.20%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits contractual term, Period			6 years
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits contractual term, Period			4 years 10 months 24 days