Capital Assets (Other Capital Assets) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013	Sep. 28, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 33,394,000		$ 33,394,000		$ 33,587,000
Accumulated Amortization	(15,738,000)		(15,738,000)		(13,931,000)
Net Carrying Value	17,656,000		17,656,000		19,656,000
Weighted average useful life (in years)			14 years 3 months 18 days		14 years 3 months 18 days
Amortization expense	900,000	900,000	1,900,000	1,900,000
Software development costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,859,000		15,859,000		15,860,000
Accumulated Amortization	(10,264,000)		(10,264,000)		(8,885,000)
Net Carrying Value	5,595,000		5,595,000		6,975,000
Weighted average useful life (in years)			5 years 8 months 12 days		5 years 8 months 12 days
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,194,000		10,194,000		10,308,000
Accumulated Amortization	(4,001,000)		(4,001,000)		(3,676,000)
Net Carrying Value	6,193,000		6,193,000		6,632,000
Weighted average useful life (in years)			15 years 3 months 18 days		15 years 3 months 18 days
Trademarks and trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,085,000		6,085,000		6,149,000
Accumulated Amortization	(1,335,000)		(1,335,000)		(1,244,000)
Net Carrying Value	4,750,000		4,750,000		4,905,000
Weighted average useful life (in years)			30 years 2 months 12 days		30 years 2 months 12 days
Land-use rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,256,000		1,256,000		1,270,000
Accumulated Amortization	(138,000)		(138,000)		(126,000)
Net Carrying Value	$ 1,118,000		$ 1,118,000		$ 1,144,000
Weighted average useful life (in years)			47 years 9 months 18 days		47 years 9 months 18 days