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Stock Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 29, 2019 | Jun. 30, 2018 | Jun. 29, 2019 | Jun. 30, 2018
Share-based compensation expense and allocation by cost [Line Items] |  |  |  |
Share-based Compensation | $ 44,257 | $ 40,956 | $ 86,510 | $ 78,857
Cost of product and maintenance |  |  |  |
Share-based compensation expense and allocation by cost [Line Items] |  |  |  |
Share-based Compensation | 652 | 606 | 1,333 | 1,196
Cost of services |  |  |  |
Share-based compensation expense and allocation by cost [Line Items] |  |  |  |
Share-based Compensation | 829 | 884 | 1,695 | 1,747
Marketing and sales |  |  |  |
Share-based compensation expense and allocation by cost [Line Items] |  |  |  |
Share-based Compensation | 9,509 | 8,268 | 18,615 | 15,882
Research and development |  |  |  |
Share-based compensation expense and allocation by cost [Line Items] |  |  |  |
Share-based Compensation | 27,659 | 25,100 | 54,557 | 48,335
General and administrative |  |  |  |
Share-based compensation expense and allocation by cost [Line Items] |  |  |  |
Share-based Compensation | $ 5,608 | $ 6,098 | $ 10,310 | $ 11,697

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + 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=109223946&loc=d3e3602-108585 + Details
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