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Employee Benefit Plans (Schedule of Fair Value of Employee Share-Based Payments Awards ESPP Assumptions and Weighted Average Fair Values) (Details)
12 Months Ended
Jan. 01, 2021
Jan. 03, 2020
Dec. 28, 2018
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate 0.30% 1.77% 2.81%
Dividend yield 0.00% 0.00% 0.00%
Volatility 54.00% 48.00% 55.00%
Expected life 4 years 4 months 24 days 4 years 3 months 18 days 4 years 4 months 24 days
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate 0.79% 2.16% 1.93%
Dividend yield 0.00% 0.00% 0.00%
Volatility 52.00% 50.00% 53.00%
Expected life 6 months 6 months 6 months