Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 27, 2014
Dec. 31, 2013
Sep. 28, 2013
Sep. 27, 2014
M
Sep. 28, 2013
Income Tax Disclosure [Abstract]          
Income tax provision (benefit) from continuing operations $ 27,900,000   $ (2,600,000) $ 98,700,000 $ 29,800,000
Reassessment of tax reserves (2,100,000)     (1,600,000)  
Reassessment of tax reserves and valuation allowance adjustments primarily related to stock-based compensation     (4,300,000)   8,200,000
Effective tax rate from continuing operations 31.40%   (4.80%) 33.40% 14.30%
Reversal of deferred tax valuation allowance 9,500,000 599,500,000      
Gross unrecognized tax benefits, including interest 5,700,000 6,300,000 10,600,000 5,700,000 10,600,000
Possible decrease of total amount of gross unrecognized tax benefits due to settlements with taxing authorities or lapses in the statute of limitations 1,100,000     1,100,000  
Number of months from reporting date for possible decrease of total amount of gross unrecognized tax benefits       12  
Interest accrued related to unrecognized tax benefits 300,000 300,000 700,000 300,000 700,000
Amounts accrued for penalties for unrecognized tax benefits $ 0 $ 0 $ 0 $ 0 $ 0