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Business Acquisition Narratives (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 29, 2016 | Sep. 30, 2016 | Jul. 01, 2016 | Apr. 01, 2016 | Oct. 02, 2015 | Jul. 01, 2016 | Sep. 30, 2016 | Oct. 02, 2015 | Dec. 31, 2015
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Current |  |  | $ 0 |  |  |  |  | $ 0 |  |
Goodwill |  |  | 239,880 |  |  |  |  | 239,880 |  | $ 197,781
Indefinite-lived Intangible Assets Acquired |  |  |  |  |  |  | $ 1,100 |  |  |
Gross Profit |  |  | 51,363 |  |  | $ 46,231 |  | 143,057 | $ 155,644 |
Goodwill, Acquired During Period |  |  |  |  |  |  |  | 41,670 |  |
TVN [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Current |  |  |  |  | $ 8,000 |  |  |  |  |
Business Combination, Consideration Transferred |  | $ 84,600 |  | $ 82,500 |  |  |  | 82,512 |  |
Contingent consideration for TVN acquisition not yet paid |  |  | 0 |  |  |  |  | 0 |  |
Purchase Consideration Remain in Escrow |  |  | $ 13,500 |  |  |  |  | 13,500 |  |
Purchase Consideration Escrow Period |  |  | 18 months |  |  |  |  |  |  |
Goodwill |  |  | $ 41,670 |  |  |  |  | 41,670 |  |
Revenues |  |  | 19,000 |  |  |  |  | 40,200 |  |
Gross Profit |  |  | 7,600 |  |  |  |  | 14,700 |  |
Goodwill, Acquired During Period |  |  |  |  | $ 39,200 |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  | 534 |  |  |  |  | 3,855 |  |
Business Combination, Acquisition and Integration Related Expenses |  |  | 5,300 |  |  |  |  | 11,800 |  |
In Process Research and Development | TVN [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets | [1] |  | $ 0 |  |  |  |  | 0 |  |
Developed Technology | TVN [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived Intangible Assets Acquired |  |  |  | 1,100 |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 4 years |  |  |  | 4 years |  |  |
Maximum [Member] | In Process Research and Development | TVN [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Expected Project Completion Period |  |  |  |  |  |  | 6 months |  |  |
Fair Value Adjustment To Deferred Revenue [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Revenues |  |  | $ 800 |  |  |  |  | $ 2,500 |  |
TVN's 2015 backlog [Member] | TVN [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  | $ 2,100 |  |  |  |  |  |
TVN's 2015 backlog [Member] | Maximum [Member] | TVN [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Contingent consideration for TVN acquisition not yet paid |  | $ 5,000 |  |  |  |  |  |  |  |
[1] | By the end of the second quarter of 2016, the Company completed the TVN in-process research and development activities and as a result, the in-process research and development of $1.1 million was reclassified to developed technology.

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- Definition 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. + References 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=66006027&loc=d3e16265-109275 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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