Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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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