| License Agreement (Details) - Agreement | 12 Months Ended | 
|---|---|
| Dec. 31, 2012 | |
| Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | |
| Percentage of non-voting membership interest | 10.00% | 
| License agreement expiration period | 25 years | 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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| X | ||||||||||
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- Definition Represents element information pertaining to percentage of non-voting membership interest. No definition available. 
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| X | ||||||||||
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- Definition Represents element information pertaining to license agreement expiration period. No definition available. 
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- Details 
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