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Revenue (Tables) | 12 Months Ended
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Dec. 29, 2018
Revenue from Contract with Customer [Abstract] |
Revenue from External Customers by Products and Services | The following table shows the percentage of product and related maintenance revenue contributed by each of Cadence’s five product groups and services for fiscal 2018, 2017 and 2016:
| 2018 |  | 2017 |  | 2016
Functional Verification, including Emulation and Prototyping Hardware | 24 | % |  | 22 | % |  | 25 | %
Digital IC Design and Signoff | 29 | % |  | 29 | % |  | 29 | %
Custom IC Design and Simulation | 26 | % |  | 27 | % |  | 25 | %
System Interconnect and Analysis | 9 | % |  | 10 | % |  | 10 | %
IP | 12 | % |  | 12 | % |  | 11 | %
Total | 100 | % |  | 100 | % |  | 100 | %
Contract Assets and Deferred Revenue | Cadence’s contract balances as of December 29, 2018 and December 30, 2017 were as follows:
| As of
| December 29, 2018 |  | December 30, 2017
|  |  | As Adjusted
| (In thousands)
Contract assets | $ | 10,055 |  |  | $ | 3,964 |
Deferred revenue | 401,174 |  |  | 336,060 |

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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599 + Details
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