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Stock-Based Compensation Expense - Weighted-Average Assumptions Used in Estimating Fair Values of Stock Options Granted (Details)
3 Months Ended 9 Months Ended
Sep. 27, 2020
Sep. 29, 2019
Sep. 27, 2020
Sep. 29, 2019
Share-based Payment Arrangement [Abstract]        
Risk-free rate 0.00% 2.70% 1.60% 2.70%
Expected dividend yield 0.00% 0.39% 0.43% 0.39%
Expected volatility 0.00% 37.00% 37.00% 37.00%
Expected term (in years)   5 years 1 month 6 days 6 years 5 years 2 months 12 days