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Stock Based Compensation (Tables) | 6 Months Ended
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Jun. 29, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-based compensation expense and allocation by cost [Table Text Block] | Stock-based compensation expense is reflected in Cadence’s condensed consolidated income statements for the three and six months ended June 29, 2019 and June 30, 2018 as follows:
| Three Months Ended |  | Six Months Ended
| June 29, 2019 |  | June 30, 2018 |  | June 29, 2019 |  | June 30, 2018
| (In thousands)
Cost of product and maintenance | $ | 652 |  |  | $ | 606 |  |  | $ | 1,333 |  |  | $ | 1,196 |
Cost of services | 829 |  |  | 884 |  |  | 1,695 |  |  | 1,747 |
Marketing and sales | 9,509 |  |  | 8,268 |  |  | 18,615 |  |  | 15,882 |
Research and development | 27,659 |  |  | 25,100 |  |  | 54,557 |  |  | 48,335 |
General and administrative | 5,608 |  |  | 6,098 |  |  | 10,310 |  |  | 11,697 |
Total stock-based compensation expense | $ | 44,257 |  |  | $ | 40,956 |  |  | $ | 86,510 |  |  | $ | 78,857 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 + Details
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