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Reconciliation of Reported Effective Income Tax Rate to Domestic Federal Income Tax Rate (Detail)
12 Months Ended
Dec. 28, 2012
Dec. 30, 2011
Dec. 31, 2010
Schedule Of Effective Tax Rates Line Items      
Statutory Federal income tax rate 35.00% 35.00% 35.00%
Valuation allowance on net domestic deferred tax assets (46.10%) (20.40%) (11.60%)
State income tax, net of federal benefits (0.80%) [1] 3.00% [1] (4.90%) [1]
Foreign earnings taxed at different rates 2.60% (2.20%) 1.80%
Research and development credits 0.10% 4.20% (1.40%)
Nondeductible equity-based compensation expense (0.40%) (0.40%) 0.30%
Interest related to prior year tax matters (0.20%) (0.20%) 0.30%
Tax exempt interest     (0.10%)
Goodwill impairment   (14.80%)  
Other, net (5.80%) (0.80%) (0.60%)
Effective income tax rate (15.60%) 3.40% 18.80%
[1] In 2010, state income tax, net of federal benefits, reflects a benefit of $9.4 million, including interest, related to the reversal of reserves no longer required due to a lapse in the statute of limitations.