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Stockholders' Equity and Stock-Based Compensation - PSUs Valuation Assumptions (Details) - Performance-Based Restricted Stock Units (PSUs) [Member] - $ / shares
6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grant Date Fair Value Per Share (in dollars per share) $ 19.09  
Expected Dividend 0.00% 0.00%
Range of risk-free interest rates 2.45%  
Range of risk-free interest rates, minimum   2.39%
Range of risk-free interest rates, maximum   2.63%
Range of expected volatilities for peer group, minimum 22.00% 22.00%
Range of expected volatilities for peer group, maximum 63.00% 66.00%
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grant Date Fair Value Per Share (in dollars per share) $ 13.12 $ 20.73
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grant Date Fair Value Per Share (in dollars per share) $ 23.75 $ 25.18