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Research and License Agreements (Details Textual) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Research and License Agreements [Line Items] |  |  |
Expenses under license agreements | $ 3,000 | $ 3,000 | $ 36,000
Annual payments to maintain our current licenses in 2015 | $ 0 |  |

X
- Definition Expense incurred under research and license agreements. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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Balance Type: | na
Period Type: | duration

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- Definition Amount of contractual obligation maturing in the third fiscal year following the latest fiscal year. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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