Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Goodwill and Other Intangible Assets Acquired Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Dec. 31, 2015
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 33,533	$ 22,155
In-Process Research and Development
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	15,850	2,669
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	28,922	21,245
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 2,400	$ 2,400
DCG Systems [Member] [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	4 years 6 months
DCG Systems [Member] [Member] \| Developed Technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	3 years 1 month
DCG Systems [Member] [Member] \| In-Process Research and Development
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Weighted Average Amortization Period	3 years
DCG Systems [Member] [Member] \| Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Weighted Average Amortization Period	10 years
DCG Systems [Member] [Member] \| Backlog
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	9 months 15 days
Minimum [Member] \| Developed Technology
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	2 years
Minimum [Member] \| In-Process Research and Development
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Minimum [Member] \| Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Minimum [Member] \| DCG Systems [Member] [Member] \| Developed Technology
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	2 years
Minimum [Member] \| DCG Systems [Member] [Member] \| Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	6 months
Maximum [Member] \| Developed Technology
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Maximum [Member] \| In-Process Research and Development
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years 6 months
Maximum [Member] \| Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Maximum [Member] \| DCG Systems [Member] [Member] \| Developed Technology
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	4 years
Maximum [Member] \| DCG Systems [Member] [Member] \| Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	1 year 6 months