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

9 Months Ended

Sep. 28, 2019

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				Nine Months Ended
	September 28, 2019		September 29, 2018		September 28, 2019		September 29, 2018
Total net revenues:
United States	$	14,091	$	8,414	$	40,135	$	22,545
China		20,357		14,486		60,590		50,861
Japan		11,189		19,693		19,720		48,090
South Korea		10,519		23,598		37,557		92,397
Taiwan		8,590		1,883		23,529		4,918
Singapore		2,775		5,842		13,049		20,377
Other		5,604		2,674		13,265		8,319
Total net revenues	$	73,125	$	76,590	$	207,845	$	247,507

Long-lived Tangible Assets

	September 28, 2019		December 29, 2018
Long-lived tangible assets:
United States	$	51,152	$	46,325
International		1,297		1,575
Total long-lived tangible assets	$	52,449	$	47,900