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Long-term contracts (Collaborative Research and Development Agreement Narrative) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Long-Term Contracts Collaborative Research And Development Agreement Narrative Details |  |
Date of collaborative research and development agreement | March 2013 |
Amount of collaborative research and development agreement | $ 4,600,000 |
Development revenue | $ 2,909,000 | $ 0

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- Definition Amount of collaborative research and development agreement + References No definition available. + Details
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- Details
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- Definition Revenues from the sale of other goods or rendering of other services, not elsewhere specified in the taxonomy; net of (reduced by) sales adjustments, returns, allowances, and discounts. + 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(a),(d)) -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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