Capital Assets (Other Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014	Sep. 27, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 40,845		$ 40,845		$ 39,020
Accumulated Amortization	(20,878)		(20,878)		(17,842)
Net Carrying Value	19,967		$ 19,967		$ 21,178
Weighted Average Useful Life (in Years)			13 years 8 months 12 days		13 years 4 months 24 days
Amortization expense	1,000	$ 900	$ 3,100	$ 2,800
Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18,607		18,607		$ 16,713
Accumulated Amortization	(13,446)		(13,446)		(11,644)
Net Carrying Value	5,161		$ 5,161		$ 5,069
Weighted Average Useful Life (in Years)			6 years 3 months 18 days		5 years 8 months 12 days
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,127		$ 12,127		$ 12,204
Accumulated Amortization	(5,085)		(5,085)		(4,453)
Net Carrying Value	7,042		$ 7,042		$ 7,751
Weighted Average Useful Life (in Years)			14 years 6 months		14 years 4 months 24 days
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,293		$ 6,293		$ 6,349
Accumulated Amortization	(1,628)		(1,628)		(1,458)
Net Carrying Value	4,665		$ 4,665		$ 4,891
Weighted Average Useful Life (in Years)			29 years 4 months 24 days		29 years 3 months 18 days
Customer List [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,562		$ 2,562		$ 2,485
Accumulated Amortization	(548)		(548)		(134)
Net Carrying Value	2,014		$ 2,014		$ 2,351
Weighted Average Useful Life (in Years)			8 years 1 month 6 days		8 years 1 month 6 days
Land-Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,256		$ 1,256		$ 1,269
Accumulated Amortization	(171)		(171)		(153)
Net Carrying Value	$ 1,085		$ 1,085		$ 1,116
Weighted Average Useful Life (in Years)			47 years 9 months 18 days		47 years 9 months 18 days