Summary Of Significant Accounting Policies (Narrative 1) (Details) (USD $)	12 Months Ended															12 Months Ended
	Sep. 29, 2012 item	Oct. 01, 2011	Oct. 02, 2010	Sep. 29, 2012 Minimum [Member]	Sep. 29, 2012 Minimum [Member] Building And Improvements [Member]	Sep. 29, 2012 Minimum [Member] Machinery And Equipment [Member]	Sep. 29, 2012 Maximum [Member]	Sep. 29, 2012 Maximum [Member] Building And Improvements [Member]	Sep. 29, 2012 Maximum [Member] Machinery And Equipment [Member]	Sep. 29, 2012 Foreign Exchange Balance Sheet Derivative Contracts [Member]	Oct. 01, 2011 Foreign Exchange Balance Sheet Derivative Contracts [Member]	Oct. 01, 2011 Interest Rate Swaps and Forward Interest Rate Swaps [Member]	Dec. 31, 2011 Foward Interest Rate Swaps [Member]	Dec. 31, 2011 Foward Interest Rate Swaps [Member] Minimum [Member]	Dec. 31, 2011 Foward Interest Rate Swaps [Member] Maximum [Member]	Sep. 29, 2012 Software Development Costs [Member]	Oct. 01, 2011 Software Development Costs [Member]	Oct. 02, 2010 Software Development Costs [Member]	Sep. 29, 2012 Test [Member]	Oct. 01, 2011 Test [Member]	Oct. 02, 2010 Test [Member]	Sep. 29, 2012 Sensors [Member]	Oct. 01, 2011 Sensors [Member]	Oct. 02, 2010 Sensors [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of weeks include in fiscal year, in days	364 days	364 days	364 days
Maximum number of months for manufacturing and delivery that divides short and long term contracts for revenue recognition	6 months
Minimum number of months that long term contract may contain non-routine installations and special acceptance protocols in months	6 months
Foreign currency transaction gain (loss), before tax	$ (1,800,000)	$ 500,000	$ (100,000)
Capitalization of software development costs																500,000	3,700,000
Amortization expense	3,500,000	3,300,000	3,000,000													2,600,000	1,500,000	1,300,000
Property, plant and equipment, useful life					10 years	3 years		40 years	10 years
Number of reporting units	3
Number of goodwill reporting units	2
Goodwill	16,239,000	16,027,000																	14,688,000	14,435,000	13,817,000	1,551,000	1,592,000	1,612,000
Life of warranty obligations for sales that include installation services, in months				12 months			24 months
Product obligation period from date of purchase, in months				12 months			24 months
Number of previous months historical warranty claims used to calculate warranty expense percentage (in months)	12 months
Gross notional amount of foreign exchange derivatives outstanding	60,400,000	54,700,000								51,400,000	15,900,000
Net notional amount of foreign exchange derivatives	49,700,000	46,800,000								6,600,000	4,400,000
Net market value of the foreign currency exchange contracts	700,000	300,000								400,000	200,000	600,000
Net market value of the foreign currency exchange contracts, Liabilities	1,100,000	1,000,000
Net market value of the foreign currency exchange contracts, Assets	400,000	700,000
Derivative liability, fair value	1,572,000	1,658,000
Derivative asset, fair value	432,000	968,000
Recognized in earnings as a result of the ineffectiveness of cash flow hedges	100,000	100,000	100,000
Amount projected to be reclassified from Accumulated Other Comprehensive Income into earnings	900,000
Maximum remaining maturity of any forward or optional contract derivatives (in years)	1 year 9 months 18 days
Notional amounts of outstanding interest rate swaps			$ 24,000,000										$ 27,000,000
Basis Spread on variable rate		45.00%												1.02%	1.08%
Effective interest rate on credit facility borrowings (in hundredths)		2.92%
Weighted average fixed interest rate payable (in hundredths)		2.47%