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REVENUE (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 1 Months Ended
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Collaboration arrangement for development and commercialization of oral rotavirus strain Glaxo Rotarix | Dec. 31, 2012 Collaboration arrangement for development and commercialization of oral rotavirus strain Glaxo Rotarix | Dec. 31, 2011 Collaboration arrangement for development and commercialization of oral rotavirus strain Glaxo Rotarix | Dec. 31, 1995 License agreements Cincinnati Children's Hospital Medical Center Rotarix | May 31, 2005 Royalty Agreement PRF Rotarix
REVENUE |  |  |  |  |  |  |  |
Percentage of license fee payable on net royalties received |  |  |  |  |  |  | 30.00% |
Percentage of interest in net royalties sold |  |  |  |  |  |  |  | 70.00%
Product royalty expense | $ 2,334 | $ 10,775 | $ 9,119 | $ 2,300 | $ 10,800 | $ 9,100 |  |

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- Definition Percentage of license fee payable to third party on net royalties received. + References No definition available. + Details
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- Definition Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property. + 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 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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