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           Summary of Significant Accounting Policies (Tables) 
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        12 Months Ended | |||||||||||||||||||||||||||
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           Dec. 31, 2011 
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| Summary of Significant Accounting Policies [Abstract] | ||||||||||||||||||||||||||||
| Estimated depreciable lives of Property and Equipment | 
   
   
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| X | ||||||||||
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- Definition 
          Estimated useful lives of property and equipment. No definition available. 
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| X | ||||||||||
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- Details 
          
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