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Balance Sheet Components Additional Information (Details) $ in Thousands, € in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2016 USD ($) | Jul. 01, 2016 USD ($) | Sep. 30, 2016 USD ($) | Feb. 29, 2016 USD ($) | Feb. 29, 2016 EUR (€) | Dec. 31, 2015 USD ($)
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Prepaid inventories to contract manufacturer(1) | [1] | $ 4,736 |  | $ 4,736 |  |  | $ 8,500
Income Taxes Receivable, Current | [2] | 6,279 |  | 6,279 |  |  |
Restricted cash(3) | [3] | 1,341 |  | 1,341 |  |  | $ 1,093
TVN [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Proceeds from Income Tax Refunds |  |  |  | 5,800 |  |  |
Income Taxes Receivable |  | 25,100 |  | 25,100 |  |  |
Business Combination, Contingent Consideration, Liability |  | 0 |  | 0 |  |  |
TVN's 2015 backlog [Member] | TVN [Member] | Maximum [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  |  |  |  | $ 5,000 |  |
Cash Earnout [Member] | TVN [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Other Payments to Acquire Businesses |  | 2,500 | $ 3,500 |  |  |  |
TVN's 2015 revenue, difference as converted from euros to US dollars [Member] | TVN [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  |  |  |  | 75,000 |  |
TVN's 2015 revenue, difference as converted from euros to US dollars [Member] | TVN [Member] | Maximum [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  |  |  |  | $ 83,300 | € 76 |
Accounts Payable [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Prepaid inventories to contract manufacturer(1) |  | 8,500 |  | 8,500 |  |  |
Property Lease Guarantee [Member] | Other Noncurrent Assets [Member] | TVN [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents |  | 1,100 |  | 1,100 |  |  |
Research Tax Credit Carryforward [Member] | TVN [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Income Taxes Receivable, Noncurrent | [2] | 25,100 |  | 25,100 |  |  |
Research Tax Credit Carryforward [Member] | Prepaid Expenses and Other Current Assets [Member] | TVN [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Income Taxes Receivable, Current | [2] | 6,300 |  | 6,300 |  |  |
Research Tax Credit Carryforward [Member] | Other Noncurrent Assets [Member] | TVN [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Income Taxes Receivable, Current | [2] | 18,800 |  | 18,800 |  |  |
Supplier With Offsetting Rights [Member] | Accounts Payable [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Prepaid inventories to contract manufacturer(1) |  | 3,800 |  | 3,800 |  |  |
Supplier With Offsetting Rights [Member] | Accounts Payable [Member] | Minimum [Member] |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |
Prepaid inventories to contract manufacturer(1) |  | $ 3,800 |  | $ 3,800 |  |  |
[1] | From time to time, the Company makes advance payment to a supplier for future inventory in order to secure more favorable pricing. As of September 30, 2016, the Company had $8.5 million of prepaid inventory and accounts payable of approximately $3.8 million with one of its suppliers. Based on the agreement with this supplier, the Company has the right to set off the amount owed with the amount owed by the supplier, and in October 2016, according to the terms of the supplier agreement, the Company notified the supplier of its intent to net the balances in the fourth quarter of 2016. Based on the guidance in ASC 210-20, as of September 30, 2016, the Company took a net position on the balance sheet and elected to net $3.8 million of prepaid inventories with accounts payable
[2] | The Company’s acquired TVN subsidiary in France (the “TVN French Subsidiary”) participates in the French Crédit d’Impôt Recherche (“CIR”) program (the “R&D tax credits”) which allows companies to monetize eligible research expenses. The French 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 French R&D tax credits recoverable are subject to audit by the French government and during the second quarter of 2016, the French government approved the 2012 claim and refunded $5.8 million to the TVN French Subsidiary. The remaining R&D tax credit receivables at September 30, 2016 were approximately $25.1 million and are expected to be recoverable from 2017 through 2020 with $6.3 million reported under “Prepaid and other Current Assets” and $18.8 million reported under “Other Long-term Assets” on the Company’s Condensed Consolidated Balance Sheets. Pursuant to the TVN Purchase Agreement, the Company is indemnified by the selling shareholders with respect to the validity and recoverability of the outstanding TVN French Subsidiary R&D tax credit receivables.
[3] | The restricted cash balances are primarily held as cash collateral security for certain bank guarantees. These restricted funds are invested in bank deposits and cannot be withdrawn from the Company’s accounts without the prior written consent of the applicable secured party. Additionally, as of September 30, 2016, the Company recorded approximately $1.1 million of restricted cash for the bank guarantee associated with the TVN French Subsidiary’s office building lease. This amount is reported under “Other Long-term Assets” on the Company’s Condensed Consolidated Balance Sheets.

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