CONCENTRATION OF RISK (Tables)

12 Months Ended

Dec. 31, 2014

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):

	2014			2013			2012
Customer	% of Total Revenue(1)	Accounts Receivable		% of Total Revenue(1)	Accounts Receivable		% of Total Revenue(1)	Accounts Receivable
A	54%	$	8,550	60%	$	7,337	68%	$	6,257
B	19%	7,598		9%	4,743		6%	—
C	18%	953		22%	2,905		5%	867

Revenues by geographic area

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

Country	2014		2013		2012
South Korea	$	141,922	$	102,948	$	61,960
Japan	44,903		40,539		13,666
Taiwan	1,596		904		3,074
Other non-U.S. locations	1,904		696		651
Total non-U.S. locations	190,325		145,087		79,351
United States	706		1,552		3,893
Total revenue	$	191,031	$	146,639	$	83,244

Long-lived assets (net) by geographic area

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

	2014		2013
United States	$	19,763	$	14,660
Other	159		233
Total long-lived assets	$	19,922	$	14,893