| 
           Income Taxes (Details) (USD $) 
         | 
        3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
| 
           Sep. 30, 2012 
         | 
        
           Sep. 30, 2011 
         | 
        
           Sep. 30, 2012 
         | 
        
           Sep. 30, 2011 
         | 
      |
| Income Tax Disclosure [Line Items] | ||||
| Liability for international income taxes | $ 0 | $ 0 | $ 0 | $ 0 | 
| 
           Foreign Country [Member] 
         | 
        ||||
| Income Tax Disclosure [Line Items] | ||||
| Liability for international income taxes | (61,000) | (211,000) | ||
| 
           Federal [Member] 
         | 
        ||||
| Income Tax Disclosure [Line Items] | ||||
| Net operating loss carryforward that will be subject to annual NOL utilization limitation | $ 1,400,000,000 | $ 1,400,000,000 | ||
| X | ||||||||||
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- Details 
          
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| X | ||||||||||
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- Definition 
          Operating Loss Carryforwards, Subject to Annual Utilization Limitation No definition available. 
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| X | ||||||||||
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- Definition 
          The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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