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Summary of significant accounting policies (Tables) | 12 Months Ended
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Sep. 28, 2019
Accounting Policies [Abstract] |
Schedules of concentration of credit risk | As of September 28, 2019 and September 29, 2018, the Company’s customers that accounted for 10% or more of total accounts receivable, net, were as follows:
| Accounts receivable, net
| 2019 |  | 2018
Customer A | 20 | % |  | 31 | %
Customer B | 14 | % |  | 13 | %
Customer C | * |  |  | 11 | %
Customer E | 10 | % |  | * |
* Accounts receivable was less than 10%. The Company’s customers that accounted for 10% or more of total revenue were as follows:
| Revenue
| Year Ended
| 2019 |  | 2018 |  | 2017
Customer A | 16 | % |  | 17 | % |  | 16 | %
Customer C | 10 | % |  | 10 | % |  | 12 | %
Schedule of property and equipment, depreciation | Depreciation is calculated using the straight-line method over the estimated useful lives of the related assets as follows:
Computer hardware and software | 2-3 years
Furniture and fixtures | 3-5 years
Tooling and production line test equipment | 2-4 years
Leasehold improvements | 2-10 years
Product displays | 1-3 years
Property and equipment, net by country as of September 28, 2019 and September 29, 2018 were as follows:
| 2019 |  | 2018
(In thousands) |  |  |
United States | $ | 48,370 |  |  | $ | 48,441 |
China | 16,539 |  |  | 18,729 |
Other countries | 13,230 |  |  | 18,201 |
Property and equipment, net | $ | 78,139 |  |  | $ | 85,371 |
Property and equipment, net consist of the following:
| 2019 |  | 2018
(In thousands)
Computer hardware and software | $ | 47,775 |  |  | $ | 46,385 |
Furniture and fixtures | 9,594 |  |  | 9,696 |
Tooling and production line test equipment | 54,536 |  |  | 47,297 |
Leasehold improvements | 58,944 |  |  | 53,962 |
Product displays | 45,672 |  |  | 40,265 |
Total property and equipment | 216,521 |  |  | 197,605 |
Accumulated depreciation and amortization | (138,382 | ) |  | (112,234 | )
Property and equipment, net | $ | 78,139 |  |  | $ | 85,371 |

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