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Intangible Assets and Goodwill - Finite-Lived (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 30, 2013
Jun. 29, 2013
Dec. 29, 2012
Finite-lived Intangible Assets [Roll Forward]      
Intangible Assets, Gross Amount   $ 62,448  
Additions   14,088  
Intangible Assets, Gross Amount   76,536  
Accumulated Amortization   9,272  
Expense   8,539  
Accumulated Amortization   17,811  
Intangible Assets, Net   58,725 53,176
Intangible Assets Net Excluding Goodwill [Roll Forward]      
Intangible Assets Net Excluding Goodwill Gross   83,548  
Intangible Assets Net Excluding Goodwill Acquired During Period   (112)  
Intangible Assets Net Excluding Goodwill Gross   83,436  
Intangible Assets, Net (Excluding Goodwill)   65,625 74,276
Existing developed technologies
     
Finite-lived Intangible Assets [Roll Forward]      
Intangible Assets, Gross Amount   37,048  
Additions   14,200  
Intangible Assets, Gross Amount   51,248  
Accumulated Amortization   6,055  
Expense   6,148  
Accumulated Amortization   12,203  
Intangible Assets, Net   39,045 30,993
Weight Average Useful Life   2 years 9 months 26 days  
Trade name
     
Finite-lived Intangible Assets [Roll Forward]      
Intangible Assets, Gross Amount   4,500  
Additions   (112)  
Intangible Assets, Gross Amount   4,388  
Accumulated Amortization   94  
Expense   217  
Accumulated Amortization   311  
Intangible Assets, Net   4,077 4,406
Weight Average Useful Life   9 years 3 months 15 days  
Customer relationships
     
Finite-lived Intangible Assets [Roll Forward]      
Intangible Assets, Gross Amount   17,000  
Intangible Assets, Gross Amount   17,000  
Accumulated Amortization   445  
Expense   1,068  
Accumulated Amortization   1,513  
Intangible Assets, Net   15,487 16,555
Weight Average Useful Life   7 years 3 months 15 days  
Non-compete agreement
     
Finite-lived Intangible Assets [Roll Forward]      
Intangible Assets, Gross Amount   100  
Intangible Assets, Gross Amount   100  
Accumulated Amortization   21  
Expense   50  
Accumulated Amortization   71  
Intangible Assets, Net   29 79
Weight Average Useful Life   3 months 15 days  
Backlog
     
Finite-lived Intangible Assets [Roll Forward]      
Intangible Assets, Gross Amount   3,500  
Intangible Assets, Gross Amount   3,500  
Accumulated Amortization   2,594  
Expense   906  
Accumulated Amortization   3,500  
Intangible Assets, Net   0 906
Favorable lease asset
     
Finite-lived Intangible Assets [Roll Forward]      
Intangible Assets, Gross Amount   300  
Intangible Assets, Gross Amount   300  
Accumulated Amortization   63  
Expense   150  
Accumulated Amortization   213  
Intangible Assets, Net   87 237
Weight Average Useful Life   3 months 15 days  
In-process research and development
     
Finite-lived Intangible Assets [Roll Forward]      
Additions 10,100 4,100  
Indefinite-lived Intangible Assets [Roll Forward]      
Beginning Balance   21,100  
Indefinite-lived Intangible Assets, Acquired During Period   (14,200)  
Ending Balance   6,900  
Intangible Assets Net Excluding Goodwill [Roll Forward]      
Intangible Assets, Net (Excluding Goodwill)   $ 65,625 $ 74,276