Balance Sheet Components Additional Information (Details) - USD ($) $ in Thousands		Mar. 30, 2018	Dec. 31, 2017
Business Acquisition, Contingent Consideration [Line Items]
Income Taxes Receivable, Noncurrent		$ 23,873	$ 22,322
Income Taxes Receivable, Current	[1]	6,747	6,609
Property Lease Guarantee [Member] | Other Noncurrent Assets [Member] | TVN [Member]
Business Acquisition, Contingent Consideration [Line Items]
Restricted Cash and Cash Equivalents			$ 1,200
Research Tax Credit Carryforward [Member] | TVN [Member]
Business Acquisition, Contingent Consideration [Line Items]
Income Taxes Receivable, Noncurrent		30,600
Research Tax Credit Carryforward [Member] | Prepaid Expenses and Other Current Assets [Member] | TVN [Member]
Business Acquisition, Contingent Consideration [Line Items]
Income Taxes Receivable, Current		6,700
Research Tax Credit Carryforward [Member] | Other Noncurrent Assets [Member] | TVN [Member]
Business Acquisition, Contingent Consideration [Line Items]
Income Taxes Receivable, Current		$ 23,900

[1] The Company’s acquired TVN subsidiary in France (the “TVN French Subsidiary”) which participates in the French Crédit d’Impôt Recherche (“CIR”) program (the “R&D tax credits”) which allows companies to monetize eligible research expenses. The R&D tax credits can be used to offset against income tax payable to the French government in each of the four years after being incurred, or if not utilized, are recoverable in cash. The amount of R&D tax credits recoverable are subject to audit by the French government. The R&D tax credits receivable at March 30, 2018 were approximately $30.6 million and are expected to be recoverable from 2018 through 2021 with $6.7 million reported under “Prepaid expenses and other current assets” and $23.9 million reported under “Other long-term assets” on the Company’s Condensed Consolidated Balance Sheets.