Quarterly report pursuant to Section 13 or 15(d)

Convertible Securities (Details)

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Convertible Securities (Details) (USD $)
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2012
Dec. 31, 2011
May 31, 2011
Sep. 30, 2012
Sep. 30, 2012
Convertible Securities [Abstract]          
Number of shares of convertible preferred stock converted 3,063   917    
Series B preferred stock number of common stock shares issued upon conversion 10,016,010   2,998,590    
Series B number of shares common stock issuable up on future conversion extended       19,685,400 19,685,400
Loan Agreement, maximum borrowing capacity   $ 10,000,000      
Debt instrument, principal amount   7,000,000      
Debt instrument, stated interest rate in addition to U.S. Rrime Rate   6.75%      
Debt instrument, minimum interest rate         10.00%
Debt instrument, effective interest rate       10.00% 10.00%
Series GG warrants to purchase common stock, shares   333,333      
Series GG warrants to purchase common stock, exercise price   2.10      
Contingent second advance   3,000,000      
Number of monthly installments of Principal and interest   30      
Debt convertible by Navidea   1,500,000      
Debt conversion, price per share   $ 2.77      
Beneficial conversion feature   24,888      
Number of days the warrants are outstanding during which certain provisions will remain in effect         365 days
Amortization of the debt discounts and deferred financing costs       147,000 407,000
Principal payments on debt       620,000  
Convertible notes payable       $ 6,400,000 $ 6,400,000