XML 87 R73.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stockholders' Equity and Stock-Based Compensation - Performance Stock Units Valuation Assumptions (Details) - Performance-Based Restricted Stock Units (PSUs) [Member] - $ / shares
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grant Date Fair Values Per Share (in dollars per share) $ 24.45 $ 20.51 $ 8.52
Expected Dividend 0.00% 0.00% 0.00%
Risk free interest rate     0.92%
Range of risk-free interest rates, minimum 2.39% 1.74%  
Range of risk-free interest rates, maximum 2.63% 1.84%  
Range of expected volatilities for peer group, minimum 22.00% 22.00% 22.00%
Range of expected volatilities for peer group, maximum 66.00% 66.00% 93.00%
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grant Date Fair Values Per Share (in dollars per share) $ 20.73 $ 14.57  
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grant Date Fair Values Per Share (in dollars per share) $ 25.18 $ 26.75