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CONCENTRATION OF RISK | 3 Months Ended
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Mar. 31, 2018
Risks And Uncertainties [Abstract] |
CONCENTRATION OF RISK |
14. | CONCENTRATION OF RISK:
Revenues and accounts receivable from the Company's largest customers (individually representing greater that 10% of revenues) were as follows (in thousands):
|  | % of Revenues for the three months ended March 31, |  |  | Accounts Receivable as of |
Customer |  | 2018 |  |  | 2017 |  |  | March 31, 2018 |
A |  | 55% |  |  | 35% |  |  | $ | 10,634 |
B |  | 16% |  |  | 51% |  |  | $ | 3,560 |
C |  | 11% |  |  | 3% |  |  | $ | 2,663 |
Revenues from outside of North America represented approximately 94% of consolidated revenue for both three month periods ended March 31, 2018 and 2017, respectively. Revenues by geographic area are as follows (in thousands):
|  | Three Months Ended March 31, |  |
Country |  | 2018 |  |  | 2017 |  |
South Korea |  | $ | 30,774 |  |  | $ | 47,928 |  |
China |  |  | 8,852 |  |  |  | 2,482 |  |
Japan |  |  | 875 |  |  |  | 1,084 |  |
Other non-U.S. locations |  |  | 561 |  |  |  | 712 |  |
Total non-U.S. locations |  | $ | 41,062 |  |  | $ | 52,206 |  |
United States |  |  | 2,510 |  |  |  | 3,360 |  |
Total revenue |  | $ | 43,572 |  |  | $ | 55,566 |  |
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):
|  | March 31, 2018 |  |  | December 31, 2017 |
United States |  | $ | 55,777 |  |  | $ | 53,991 |
Other |  |  | 2,651 |  |  |  | 2,459 |
Total long-lived assets |  | $ | 58,428 |  |  | $ | 56,450 |
Substantially all chemical materials were purchased from one supplier. See Note 8.

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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- References No definition available. + Details
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