Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Share-based compensation expense and allocation by cost [Line Items]
Stock-based compensation expense	$ 52,596	$ 46,482
Cost of product and maintenance
Share-based compensation expense and allocation by cost [Line Items]
Stock-based compensation expense	807	691
Cost of services
Share-based compensation expense and allocation by cost [Line Items]
Stock-based compensation expense	1,027	880
Marketing and sales
Share-based compensation expense and allocation by cost [Line Items]
Stock-based compensation expense	11,206	10,011
Research and development
Share-based compensation expense and allocation by cost [Line Items]
Stock-based compensation expense	32,858	29,346
General and administrative
Share-based compensation expense and allocation by cost [Line Items]
Stock-based compensation expense	$ 6,698	$ 5,554