CONCENTRATION OF RISK

12 Months Ended

Dec. 31, 2014



15.	CONCENTRATION OF RISK:

Included in technology development and support revenue in the accompanying statement of operations is $0.1 million, $1.1 million and $3.4 million for the years ended December 31, 2014, 2013 and 2012, respectively, of revenue which was derived from contracts with United States government agencies. Revenues derived from contracts with United States government agencies represented approximately less than 1%, 1% and 4% of the consolidated revenue for the years ended December 31, 2014, 2013 and 2012, respectively.

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

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

Revenues from outside of North America represented approximately 99%, 99% and 95% of the consolidated revenue for the years ended December 31, 2014, 2013 and 2012, respectively. 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

The Company attributes revenue to different geographic areas on the basis of the location of the customer.

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

Substantially all chemical materials were purchased from one supplier. See Note 8.

- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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