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Concentration of Credit Risk, Significant Customers and Geographic Information (Tables) | 6 Months Ended
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Jun. 30, 2018
Risks and Uncertainties [Abstract] |
Schedules of Concentration of Risk, by Risk Factor | Suppliers comprising greater than 10% of total inventory purchases are as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Vendor A | 23 | % |  | 19 | % |  | 22 | % |  | 21 | %
Vendor B | 15 | % |  | 16 | % |  | 17 | % |  | 18 | %
Vendor C | * |  |  | 20 | % |  | * |  |  | 18 | %
Vendor D | 15 | % |  | 15 | % |  | 16 | % |  | 13 | %
Vendor E | 12 | % |  | 10 | % |  | 13 | % |  | 13 | %
____________________________
* | Represents less than 10% of the inventory purchases for the respective period.
Customers comprising greater than 10% of net revenues for each of the periods presented are as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Percentage of total net revenue |  |  |  |  |  |  |
Customer A | 28 | % |  | 26 | % |  | 27 | % |  | 29 | %
The products shipped to individual countries representing greater than 10% of net revenue for each of the periods presented are as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Percentage of total net revenue |  |  |  |  |  |  |
China | 65 | % |  | 73 | % |  | 63 | % |  | 75 | %
Balances that are 10% or greater of accounts receivable, based on the Company's billings to the contract manufacturer customers, are as follows:
| June 30, |  | December 31,
| 2018 |  | 2017
Percentage of gross accounts receivable |  |  |
Customer A | 23 | % |  | * |
Customer B | * |  |  | 17 | %
Customer C | * |  |  | 10 | %
____________________________
* | Represents less than 10% of the gross accounts receivable as of the respective period end.
Revenue from External Customers by Geographic Areas | The Company's consolidated net revenues by geographic area based on ship-to location are as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
| Amount |  | % of total net revenue |  | Amount |  | % of total net revenue |  | Amount |  | % of total net revenue |  | Amount |  | % of total net revenue
Asia | $ | 87,289 |  |  | 86 | % |  | $ | 94,823 |  |  | 91 | % |  | $ | 172,103 |  |  | 81 | % |  | $ | 179,131 |  |  | 93 | %
United States | 4,636 |  |  | 5 | % |  | 2,095 |  |  | 2 | % |  | 9,831 |  |  | 5 | % |  | 2,240 |  |  | 1 | %
Rest of world | 9,608 |  |  | 9 | % |  | 7,257 |  |  | 7 | % |  | 30,426 |  |  | 14 | % |  | 11,645 |  |  | 6 | %
Total | $ | 101,533 |  |  | 100 | % |  | $ | 104,175 |  |  | 100 | % |  | $ | 212,360 |  |  | 100 | % |  | $ | 193,016 |  |  | 100 | %
Long-lived Assets by Geographic Areas | Long-lived assets, which consists of property and equipment, net, intangible assets, net, and goodwill by geographic area are as follows (in thousands):
| June 30, |  | December 31,
| 2018 |  | 2017
| Amount |  | % of total |  | Amount |  | % of total
United States | $ | 455,523 |  |  | 84 | % |  | $ | 481,638 |  |  | 84 | %
Singapore | 82,023 |  |  | 15 | % |  | 92,414 |  |  | 16 | %
Rest of world | 2,687 |  |  | — | % |  | 1,643 |  |  | — | %
Total | $ | 540,233 |  |  | 100 | % |  | $ | 575,695 |  |  | 100 | %

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