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Business Combinations (Details) (USD $)
3 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended
Jun. 29, 2013
Lumera [Member]
Jun. 29, 2013
Lumera [Member]
Sep. 29, 2012
Lumera [Member]
Dec. 20, 2012
Lumera [Member]
projects
Jun. 29, 2013
Lumera [Member]
Minimum [Member]
Jun. 29, 2013
Lumera [Member]
Maximum [Member]
Dec. 20, 2012
Lumera [Member]
Existing technology
Dec. 20, 2012
Lumera [Member]
In-process R&D
Dec. 20, 2012
Lumera [Member]
Trade Names [Member]
Dec. 20, 2012
Lumera [Member]
Customer Lists [Member]
Dec. 20, 2012
Lumera [Member]
Backlog
Jun. 29, 2013
Innolight [Member]
Sep. 29, 2012
Innolight [Member]
Oct. 30, 2012
Innolight [Member]
projects
Jun. 29, 2013
Innolight [Member]
Minimum [Member]
Jun. 29, 2013
Innolight [Member]
Maximum [Member]
Oct. 30, 2012
Innolight [Member]
Existing Technology and Production Know-how
Oct. 30, 2012
Innolight [Member]
In-process R&D
Oct. 30, 2012
Innolight [Member]
Trade Names [Member]
Oct. 30, 2012
Innolight [Member]
Customer Lists [Member]
Business Acquisition [Line Items]                                        
Business Acquisition, Number of Projects Acquired       2                   2            
Business acquisition, cash paid       $ 51,461,000                   $ 18,336,000            
Business Acquisition, Purchase Price Allocation [Abstract]                                        
Tangible assets       14,514,000                   2,510,000            
Goodwill       24,640,000                   8,312,000            
Intangible assets:             21,000,000 1,800,000 200,000 6,500,000 900,000           8,500,000 430,000 100,000 2,800,000
Deferred tax liabilities       (9,300,000)                   (3,836,000)            
Liabilities assumed       8,793,000                   480,000            
Total       51,461,000                   18,336,000            
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life         1 year 6 years                 6 years 7 years        
Expensed acquisition-related costs $ 100,000 $ 600,000 $ 300,000                 $ 200,000 $ 100,000