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Stock-Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended
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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

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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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