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Discontinued Operations - Recorded Gain With the Sale of Cable Access HFC Business (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 27, 2013
Sep. 28, 2012
Sep. 27, 2013
Sep. 28, 2012
Mar. 29, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Goodwill de-recognized $ 14,547   $ 14,547    
Gain on disposal, net of taxes     14,813 0  
HFC business [Member]
         
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Gross Proceeds     46,000    
Inventories, net 10,579   10,579    
Prepaid expenses and other current assets 612   612    
Property and equipment, net 1,180   1,180    
Goodwill de-recognized 14,547   14,547   14,547
Deferred revenue (4,499)   (4,499)    
Accrued liabilities (939)   (939)    
Total net assets sold and de-recognized 21,480   21,480    
Less : Selling cost     2,473    
Less : Tax effect     7,234    
Gain on disposal, net of taxes $ (6) $ 0 $ 14,813 $ 0