Condensed Consolidated Financial Statement Details (Tables)
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6 Months Ended |
Jun. 30, 2018 |
Property, Plant and Equipment [Abstract] |
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Schedule of Inventory |
Inventory consisted of the following (in thousands): | | | | | | | | | | June 30, 2018 | | December 31, 2017 | Raw materials | $ | 6,518 |
| | $ | 6,643 |
| Finished goods | 8,447 |
| | 10,934 |
| Total inventory | $ | 14,965 |
| | $ | 17,577 |
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Schedule of Property and Equipment, Net |
Property and equipment, net, consisted of the following (in thousands): | | | | | | | | | | | | Useful Life | | June 30, 2018 | | December 31, 2017 | | (in years) | |
| Equipment | 1-3 | | $ | 49,821 |
| | $ | 47,817 |
| Software | 1-3 | | 4,022 |
| | 3,988 |
| Furniture and fixtures | 1-3 | | 951 |
| | 950 |
| Leasehold improvements | 2-8 | | 3,824 |
| | 3,824 |
| Construction in progress | | | 38 |
| | — |
| Property and equipment, gross | | | 58,656 |
| | 56,579 |
| Less: accumulated depreciation | | | (49,980 | ) | | (46,666 | ) | Property and equipment, net | | | $ | 8,676 |
| | $ | 9,913 |
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Schedule of Acquired Intangible Assets |
Purchased intangible assets, net, consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2018 | | December 31, 2017 | | Cost | | Accumulated Amortization | | Net | | Cost | | Accumulated Amortization | | Net | Developed technology | $ | 5,050 |
| | $ | (2,020 | ) | | $ | 3,030 |
| | $ | 5,050 |
| | $ | (1,515 | ) | | $ | 3,535 |
| Patents | 2,936 |
| | (1,497 | ) | | 1,439 |
| | 2,936 |
| | (1,281 | ) | | 1,655 |
| Total | $ | 7,986 |
| | $ | (3,517 | ) | | $ | 4,469 |
| | $ | 7,986 |
| | $ | (2,796 | ) | | $ | 5,190 |
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Schedule of Future Amortization Expense for Purchased Finite-lived Intangible Assets |
Future amortization expense for purchased intangible assets as of June 30, 2018 is as follows (in thousands): | | | | | | Fiscal Year | | | Remainder of 2018 | | $ | 722 |
| 2019 | | 1,442 |
| 2020 | | 1,442 |
| 2021 | | 863 |
| | | $ | 4,469 |
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Schedule of Accrued Liabilities |
Accrued liabilities consisted of the following (in thousands): | | | | | | | | | | June 30, 2018 | | December 31, 2017 | Accrued compensation and benefits | $ | 13,210 |
| | $ | 13,828 |
| Accrued tax liabilities | 3,459 |
| | 2,985 |
| Other | 8,485 |
| | 5,022 |
| Total accrued liabilities | $ | 25,154 |
| | $ | 21,835 |
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Schedule of Deferred Revenue |
Deferred revenue consisted of the following (in thousands): | | | | | | | | | | June 30, 2018 | | December 31, 2017 | Deferred revenue: | | | | Products | $ | 6,771 |
| | $ | 6,161 |
| Services | 91,312 |
| | 88,476 |
| Total deferred revenue | 98,083 |
| | 94,637 |
| Less: current portion | (64,907 | ) | | (61,858 | ) | Non-current portion | $ | 33,176 |
| | $ | 32,779 |
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