Capital Assets (Other Intangible Assets) (Details) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014	Sep. 27, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 40,091,000		$ 40,091,000		$ 39,020,000
Accumulated Amortization	(19,862,000)		(19,862,000)		(17,842,000)
Net Carrying Value	20,229,000us-gaap_FiniteLivedIntangibleAssetsNet		20,229,000us-gaap_FiniteLivedIntangibleAssetsNet		21,178,000us-gaap_FiniteLivedIntangibleAssetsNet
Weighted Average Useful Life (in Years)			13 years 9 months 18 days		13 years 4 months 24 days
Amortization expense	1,100,000us-gaap_AmortizationOfIntangibleAssets	900,000us-gaap_AmortizationOfIntangibleAssets	2,100,000us-gaap_AmortizationOfIntangibleAssets	1,900,000us-gaap_AmortizationOfIntangibleAssets
Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,858,000		17,858,000		16,713,000
Accumulated Amortization	(12,845,000)		(12,845,000)		(11,644,000)
Net Carrying Value	5,013,000		5,013,000		5,069,000
Weighted Average Useful Life (in Years)			6 years 4 months 24 days		5 years 8 months 12 days
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,123,000		12,123,000		12,204,000
Accumulated Amortization	(4,859,000)		(4,859,000)		(4,453,000)
Net Carrying Value	7,264,000		7,264,000		7,751,000
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	6,292,000		6,292,000		6,349,000
Accumulated Amortization	(1,568,000)		(1,568,000)		(1,458,000)
Net Carrying Value	4,724,000		4,724,000		4,891,000
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	2,562,000		2,562,000		2,485,000
Accumulated Amortization	(426,000)		(426,000)		(134,000)
Net Carrying Value	2,136,000		2,136,000		2,351,000
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	1,256,000		1,256,000		1,269,000
Accumulated Amortization	(164,000)		(164,000)		(153,000)
Net Carrying Value	$ 1,092,000		$ 1,092,000		$ 1,116,000
Weighted Average Useful Life (in Years)			47 years 9 months 18 days		47 years 9 months 18 days

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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