(10) Concentrations of Credit Risk, Significant Customers and Geographic Information

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

(10) Concentrations of Credit Risk, Significant Customers and Geographic Information

(10) Concentrations of Credit Risk, Significant Customers and Geographic Information

Financial instruments which subject the Company to concentrations of credit risk consist principally of cash, cash equivalents and trade accounts receivable. The Company maintains such cash deposits in a high credit quality financial institution.

The Company extends credit to customers who consist principally of microelectronics systems companies in the United States, Europe and Asia. The Company generally does not require collateral or other security as a condition of sale rather relying on credit approval, balance limitation and monitoring procedures to control credit risk of trade accounts receivable. Management conducts on-going credit evaluations of its customers, and historically the Company has not experienced any significant credit-related losses with respect to its trade accounts receivable.

Revenues from significant customers as a percentage of total revenues in 2016, 2015 and 2014 were as follows:

	Percent of Total Revenues
Significant Customer	2016		2015		2014
A	19	%	27	%	38	%
B	20	%	23	%	21	%
C	10	%	10	%	10	%

 As of December 31, 2016, the Company had trade accounts receivable due from these three customers that accounted for 41% of total trade accounts receivable as of that date. No other customer balances constitute 10% or more of accounts receivable at December 31, 2016. Management believes that any credit risks have been properly provided for in the accompanying financial statements.

The Company’s revenue was derived from the following countries in 2016, 2015, and 2014:

	Percent of Total Revenues
Country	2016		2015		2014
United States of America	29	%	21	%	20	%
Germany	38	%	50	%	59	%
Other	33	%	29	%	21	%

 Many of the Company’s customers based in the United States conduct design, purchasing and payable functions in the United States, but manufacture overseas. Revenue generated from shipments made to customers’ locations outside the United States accounted for 71%, 79% and 80% of total revenue in 2016, 2015 and 2014, respectively.

All of the Company’s long-lived assets and operations are located in the United States.