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CONCENTRATION OF RISK, Revenues by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Concentration Risk [Line Items] |  |  |  |
Revenues | $ 64,127 | $ 49,359 | $ 101,965 | $ 64,335
UNITED STATES |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenues | 164 | 329 | 330 | 1,084
South Korea [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenues | 49,262 | 38,458 | 72,218 | 47,802
Japan [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenues | 10,903 | 10,485 | 24,961 | 15,097
Other [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenues | 3,798 | 87 | 4,456 | 352
All Countries [Domain] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenues | $ 63,963 | $ 49,030 | $ 101,635 | $ 63,251
Geographic Concentration Risk [Member] | Total Revenue [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Concentration Risk, Percentage | 100.00% | 99.00% | 100.00% | 98.00%

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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