Capital Assets (Other Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Apr. 02, 2016	Oct. 03, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 43,308	$ 41,335
Accumulated Amortization	(22,725)	(21,629)
Net Carrying Value	$ 20,583	$ 19,706
Weighted Average Useful Life (in Years)	12 years 10 months 24 days	13 years 4 months 24 days
Software development costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,235	$ 19,546
Accumulated Amortization	(14,492)	(14,046)
Net Carrying Value	$ 6,743	$ 5,500
Weighted Average Useful Life (in Years)	6 years 1 month 6 days	6 years 2 months 12 days
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 11,677	$ 11,838
Accumulated Amortization	(5,503)	(5,141)
Net Carrying Value	$ 6,174	$ 6,697
Weighted Average Useful Life (in Years)	14 years 6 months	14 years 6 months
Trademarks and trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 6,073	$ 6,163
Accumulated Amortization	(1,755)	(1,659)
Net Carrying Value	$ 4,318	$ 4,504
Weighted Average Useful Life (in Years)	29 years 4 months 24 days	29 years 4 months 24 days
Customer List [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,116	$ 2,561
Accumulated Amortization	(792)	(610)
Net Carrying Value	$ 2,324	$ 1,951
Weighted Average Useful Life (in Years)	7 years 6 months	8 years 1 month 6 days
Land-use rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,207	$ 1,227
Accumulated Amortization	(183)	(173)
Net Carrying Value	$ 1,024	$ 1,054
Weighted Average Useful Life (in Years)	47 years 9 months 18 days	47 years 9 months 18 days