CONCENTRATION OF RISK (Tables)

12 Months Ended

Dec. 31, 2015

Risks and Uncertainties [Abstract]

Revenues and accounts receivable from our largest non-government customers

Revenues and accounts receivable from the Company's largest non-government customers for the years ended December 31 were as follows (in thousands):

	2015			2014			2013
Customer	% of Total Revenue(1)	Accounts Receivable		% of Total Revenue(1)	Accounts Receivable		% of Total Revenue(1)	Accounts Receivable
A	62%	$	13,355	54%	$	8,550	60%	$	7,337
B	25%	8,477		19%	7,598		9%	4,743
C	5%	198		18%	953		22%	2,905

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(1) Materials sold to Customer C are eventually purchased by Customer A.

Revenues by geographic area

Revenues by geographic area are as follows (in thousands):

Country	2015		2014		2013
South Korea	$	168,267	$	141,922	$	102,948
Japan	16,542		44,903		40,539
Taiwan	2,175		1,596		904
Other non-U.S. locations	2,844		1,904		696
Total non-U.S. locations	189,828		190,325		145,087
United States	1,218		706		1,552
Total revenue	$	191,046	$	191,031	$	146,639

Long-lived assets (net) by geographic area

Long-lived assets (net), by geographic area are as follows (in thousands):

	2015		2014
United States	$	22,187	$	19,763
Other	220		159
Total long-lived assets	$	22,407	$	19,922