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Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue by geographical areas | $ 27,086 | $ 24,110
Geographic Concentration Risk [Member] | North America [Member] | Sales Revenue, Net [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue percentage by geographical areas | 42.00% | 41.00%
Geographic Concentration Risk [Member] | GERMANY | Sales Revenue, Net [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue percentage by geographical areas | 34.00% | 19.00%
Geographic Concentration Risk [Member] | KOREA, REPUBLIC OF | Sales Revenue, Net [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue percentage by geographical areas | 8.00% | 21.00%
Geographic Concentration Risk [Member] | JAPAN | Sales Revenue, Net [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue percentage by geographical areas | 6.00% | 9.00%
Geographic Concentration Risk [Member] | Rest of Asia [Member] | Sales Revenue, Net [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue percentage by geographical areas | 6.00% | 6.00%
Geographic Concentration Risk [Member] | Rest of Europe [Member] | Sales Revenue, Net [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue percentage by geographical areas | 4.00% | 4.00%
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue percentage by geographical areas | 100.00% | 100.00%
North America [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue by geographical areas | 11,399 | 9,866
GERMANY |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue by geographical areas | 9,100 | 4,625
KOREA, REPUBLIC OF |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue by geographical areas | 2,260 | 4,912
JAPAN |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue by geographical areas | 1,713 | 2,261
Rest of Asia [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue by geographical areas | 1,495 | 1,544
Rest of Europe [Member] |  |
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items] |  |
Revenue by geographical areas | $ 1,119 | $ 902

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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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