Summary Of Significant Accounting Policies (Narrative 1) (Details) (USD $)	12 Months Ended
	Sep. 28, 2013 item	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
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	$ (1,700,000)	$ (1,800,000)	$ 500,000
Amortization expense	3,700,000	3,500,000	3,300,000
Number of reporting units	3
Number of goodwill reporting units	2
Goodwill	16,624,000	16,239,000
Number of previous months historical warranty claims used to calculate warranty expense percentage (in months)	12 months
Derivative liability, fair value	1,474,000	1,572,000
Derivative asset, fair value	1,091,000	432,000
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Life of warranty obligations for sales that include installation services, in months	12 months
Product obligation period from date of purchase, in months	12 months
Minimum [Member] | Building and improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	10 years
Minimum [Member] | Machinery and equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Life of warranty obligations for sales that include installation services, in months	24 months
Product obligation period from date of purchase, in months	24 months
Maximum [Member] | Building and improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	40 years
Maximum [Member] | Machinery and equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	10 years
Software development costs [Member]
Summary Of Significant Accounting Policies [Line Items]
Capitalization of software development costs		500,000
Amortization expense	2,800,000	2,600,000	1,500,000
Test [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill	15,028,000	14,688,000	14,435,000
Sensors [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill	$ 1,596,000	$ 1,551,000	$ 1,592,000