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Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Revenue by Product Category

The following summarizes the Company’s revenue by product category:

		Year Ended December 31
		2014				2015				2016
		US$				US$				US$
Mobile Storage			241,614				302,910				510,687
Mobile Communications			40,034				50,896				39,322
Others			7,675				7,491				6,137
			289,323				361,297				556,146

Revenue by Geographic Area

The following summarizes the Company’s revenue by geographic area:

		Year Ended December 31
		2014				2015				2016
		US$				US$				US$
Taiwan			57,244				71,387				75,926
United States			26,265				39,558				59,390
Japan			11,180				19,636				17,070
Korea			150,557				150,118				183,249
China			35,008				69,623				151,112
Others			9,069				10,975				69,399
			289,323				361,297				556,146

Major customers representing at least 10% of net sales

Major customers representing at least 10% of net sales

		Year Ended December 31
		2014								2015								2016
		US$				%				US$				%				US$				%
SK Hynix			107,227				37				108,645				30				156,541				28
Samsung			30,065				10				*				*				*				*

* Less than 10%

Long-Lived Assets (Property and Equipment, Net) by Geographic Area

Long-lived assets (property and equipment, net) by geographic area were as follows:

		Year Ended December 31
		2014				2015				2016
		US$				US$				US$
Taiwan			28,739				32,014				34,011
United States			142				274				237
Korea			2,477				1,891				1,448
China			4,163				16,268				12,181
Japan			16				22				15
			35,537				50,469				47,892

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- Definition

Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph b
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

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Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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