Concentration of Credit Risk (Tables)

3 Months Ended

Mar. 31, 2018

Schedule of Concentration of Sales and Accounts Receivable

The following represents customers that accounted for 10% or more of total revenue during the three months ended March 31, 2018 and 2017 and customers that accounted for 10% or more of total trade accounts receivable at March 31, 2018 and 2017.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
Customer A		30	%		22	%
Customer B		8			14
Customer C		4			13

	As of March 31,
	2018			2017
Percentage of gross trade accounts receivable
Customer A		22	%		14	%
Customer B		11			14
Customer C		6			16
Customer D		6			11

Schedule of Revenue by Geographic area

Net revenue by geographic area are as follows. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
China		64	%		71	%
Other Asia		8			13
North America		22			10
Europe		6			6