Major Customers and Concentrations of Credit Risk

We provide proprietary products and services to the Department of Defense and various United States Government agencies, and most of the aerospace and aircraft manufacturers who receive contracts directly from the U.S. Government as an original equipment manufacturer (“prime manufacturers”). In addition, we also service technology-driven markets in the industrial, natural resources and medical and other end-use markets. As a result, we have significant net revenues from certain customers. Accounts receivable were diversified over a number of different commercial, military and space programs and were made by both operating segments. Net revenues from our top ten customers, including the Boeing Company (“Boeing”) and Raytheon Company (“Raytheon”), represented the following percentages of total net sales:



	Years Ended December 31,
	2014		2013		2012
Boeing	20	%	18	%	17	%
Raytheon	9	%	10	%	7	%
Top ten customers	59	%	57	%	55	%

Boeing and Raytheon represented the following percentages of total accounts receivable:

In 2014, 2013 and 2012, net revenues from foreign customers on the location of the customer, were approximately $66.7 million, $66.0 million and $52.1 million, respectively. No net revenues from a foreign country were greater than approximately 2% of total net revenues in 2014, 2013, and 2012. We have manufacturing facilities in Thailand and Mexico. Our net revenues, profitability and identifiable long-lived assets attributable to foreign revenues activity were not material compared to our net revenues, profitability and identifiable long-lived assets attributable to our domestic operations during 2014, 2013, and 2012. We are not subject to any significant foreign currency risks as all our sales are made in United States dollars.

December 31,