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Notes Payable (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Notes Payable [Line Items]    
Debt Conversion, Converted Instrument, Amount $ 0.1 $ 0.9
Debt Conversion, Converted Instrument, Shares Issued 0.07 0.40