Segment, Geographic, Product and Significant Customer Information (Tables)

3 Months Ended

Apr. 01, 2017

Segment Reporting [Abstract]

Total net revenue

The following tables summarize total net revenues and long-lived assets (excluding intangible assets) attributed to significant countries (in thousands)

	Three Months Ended
	April 1, 2017		March 26, 2016
Total net revenues (1):
South Korea	$	18,619	$	8,436
United States		13,573		7,191
Taiwan		11,833		5,477
China		6,687		6,506
Japan		3,353		7,188
Singapore		1,491		9,902
Other		3,758		2,789
Total net revenues	$	59,314	$	47,489

Long-lived tangible assets

	April 1, 2017		December 31, 2016
Long-lived tangible assets:
United States	$	41,659	$	42,688
International		1,517		1,538
Total long-lived tangible assets	$	43,176	$	44,226

Customers accounted for 10% or more of total accounts receivable

The following customers accounted for 10% or more of total accounts receivable, net:

	At
	April 1, 2017		December 31, 2016
SK Hynix		22.0%	***
Taiwan Semiconductor Manufacturing Company Limited		20.0%		20.1%
Samsung Electronics Co. Ltd.		13.4%		14.3%
Micron Technology, Inc.	***			11.8%
Intel Corporation	***			11.1%
Toshiba Corporation	***			10.2%

*** The customer accounted for less than 10% of total accounts receivable, net, as of that period end.

Customers accounted for 10% or more of total revenue

The following customers accounted for 10% or more of total net revenues:

	Three Months Ended
	April 1, 2017		March 26, 2016
Samsung Electronics Co. Ltd.		21.6%	***
Taiwan Semiconductor Manufacturing Company Limited		16.7%		10.1%
Intel Corporation		15.6%		15.7%
SK Hynix		13.6%		16.7%
Micron Technology, Inc.	***			25.9%
Toshiba Corporation	***			11.9%

*** The customer accounted for less than 10% of total net revenues during the period.