Summary of significant accounting policies (Tables)

12 Months Ended

Sep. 28, 2019

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