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Acquisitions & Divestitures (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Business Acquisition [Line Items]    
Number of Businesses Acquired 2 4
Components Segment [Member]
    
Business Acquisition [Line Items]    
Number of Businesses Acquired 1 2
Aspen [Member]
    
Business Acquisition [Line Items]    
Acquisitions of businesses, net of cash acquired $ 33,911  
Protokraft [Member]
    
Business Acquisition [Line Items]    
Acquisitions of businesses, net of cash acquired   12,500
Business Acquisition, Preacquisition Contingency, Amount of Settlement   4,809
Tritech [Member]
    
Business Acquisition [Line Items]    
Acquisitions of businesses, net of cash acquired   34,267
Business Acquisitions, Working Capital Adjustments, Cash Paid 1,346  
Space And Defense Controls Segment [Member]
    
Business Acquisition [Line Items]    
Number of Businesses Acquired 1 2
Broad Reach [Member] [Member]
    
Business Acquisition [Line Items]    
Acquisitions of businesses, net of cash acquired 34,550  
Business Acquisition, Preacquisition Contingency, Amount of Settlement 3,447  
Issuance of unsecured note 8,450  
Bradford Engineering [Member]
    
Business Acquisition [Line Items]    
Acquisitions of businesses, net of cash acquired   13,173
In-Space Propulsion [Member]
    
Business Acquisition [Line Items]    
Acquisitions of businesses, net of cash acquired   44,845
Business Acquisitions, Working Capital Adjustments, Cash Paid 650  
Medical Devices [Member]
    
Business Acquisition [Line Items]    
Business divestiture number of Entities Divested 1  
Ethox Medical [Domain] [Member]
    
Business Acquisition [Line Items]    
Proceeds from Divestiture of Businesses 5,000  
Noncash or Part Noncash Divestiture, Amount of Consideration Received $ 200