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Convertible Debt (Details) (USD $)
 0 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 4 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 1 Months Ended 2 Months Ended 12 Months Ended 2 Months Ended
Nov. 19, 2010
Nov. 04, 2010
Sep. 23, 2010
Sep. 25, 2010
Mar. 21, 2010
Apr. 30, 2011
Mar. 31, 2011
Nov. 30, 2010
Oct. 31, 2010
Sep. 30, 2010
Mar. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Mar. 16, 2012
Apr. 25, 2011
Sep. 22, 2010
Sep. 08, 2010
May 27, 2010
Mar. 27, 2010
Sep. 30, 2010
Senior Convertible Secured Notes - 2007 [Member]
Debt_holder
Dec. 31, 2012
Senior Convertible Secured Notes - 2007 [Member]
Dec. 31, 2011
Senior Convertible Secured Notes - 2007 [Member]
Dec. 31, 2010
Senior Convertible Secured Notes - 2007 [Member]
Sep. 22, 2010
Senior Convertible Secured Notes - 2007 [Member]
Jun. 30, 2011
September 2009 Senior Convertible Secured Notes Financing transaction [Member]
Dec. 15, 2009
September 2009 Senior Convertible Secured Notes Financing transaction [Member]
Dec. 31, 2012
September 2009 Senior Convertible Secured Notes Financing transaction [Member]
Dec. 31, 2011
September 2009 Senior Convertible Secured Notes Financing transaction [Member]
Dec. 31, 2010
September 2009 Senior Convertible Secured Notes Financing transaction [Member]
Jun. 30, 2010
Senior Convertible Secured Notes - 2010 [Member]
Dec. 31, 2012
Senior Convertible Secured Notes - 2010 [Member]
Dec. 31, 2011
Senior Convertible Secured Notes - 2010 [Member]
Dec. 31, 2010
Senior Convertible Secured Notes - 2010 [Member]
Dec. 31, 2011
Senior Convertible Secured Notes- 2011 [Member]
Nov. 30, 2011
Senior Convertible Secured Notes- 2011 [Member]
Apr. 30, 2011
Senior Convertible Secured Notes- 2011 [Member]
Dec. 31, 2012
Senior Convertible Secured Notes- 2011 [Member]
Dec. 31, 2011
Senior Convertible Secured Notes- 2011 [Member]
Dec. 13, 2011
Senior Convertible Secured Notes- 2011 [Member]
Jun. 30, 2011
Senior Convertible Secured Notes- 2011 [Member]
Mar. 31, 2011
Senior Convertible Secured Notes- 2011 [Member]
Oct. 31, 2010
Warrant Repricing and Debt Extension Financing Transaction - 2010 [Member]
Dec. 13, 2010
Warrant Repricing and Debt Extension Financing Transaction - 2010 [Member]
Convertible Debt (Textual)                                                                                        
Convertible promissory notes                                 $ 59,000 $ 12,500 $ 1,600 $ 1,600   $ 0 $ 0 $ 0 $ 126,362                                      
Convertible promissory notes, interest rate description                                           Greater of 8% or LIBOR plus 3% interest per annum. Greater of 8% or LIBOR plus 3% interest per annum.         Annual interest rate of 7%, payable on June 30 and December 31 of each year.       Annual interest rate of 7%, payable on June 30 and December 31 of each year.           Interest at a rate of seven percent (7%) per annum, that was scheduled to mature on March 1, 2014            
Maturity date of convertible notes                   Aug. 26, 2010                     Aug. 26, 2010 Aug. 26, 2010         Dec. 31, 2010 Dec. 31, 2010       Dec. 31, 2010         Mar. 01, 2014           Dec. 31, 2010  
Proceeds from Issuance of Private Placement                                                     987,000       1,597,000           4,200,000              
Extended maturity date of convertible promissory notes                                           Apr. 26, 2011         Jun. 30, 2011 Jun. 30, 2011       Jun. 30, 2011                     Jun. 30, 2011  
Number of debt holders under debt modification agreement                                         2                                              
Debt-for-equity repayment plan                                           Retired the convertible promissory notes in equal installments by issuing our common stock priced at a 15% discount from the average market closing price for the five days ending on the 25th of each month over the eight month period beginning September 26, 2010 ending on April 26, 2011.                                            
Right of holder under debt-for-equity repayment plan                                           Right to convert the outstanding balance priced at $2.25 per share if the market value of our common stock was greater than $2.50 per share for five consecutive days.           Right to have the conversion price adjusted to equal the lower stock price if we issued common stock or convertible notes at a lower conversion price than $0.50 per share during the period that the notes were outstanding.       Right to have the conversion price adjusted to equal the lower stock price if we issued stock or convertible notes at a lower conversion price than $0.50 during the period that the notes were outstanding.                        
Stock issued to holders of notes                                             31,570           1,851,486       3,557,171                      
Shares issued on conversion of convertible notes                                                                     1,513,237 232,125 1,691,320              
Principal amount of convertible notes converted into shares                                                         912,036       1,750,143   3,700,000                  
Accrued interest on convertible notes converted into shares                                                         13,707       28,442   130,000                  
Payment of convertible debt in cash                          25,000                          25,000                                    
Debt maturity, principal payment                                             84,657                                          
Debt maturity interest payment                                             1,054                                          
Conversion price                                 $ 0.50   $ 0.50 $ 0.50   $ 87.50 $ 87.50       $ 0.50 $ 0.50                   $ 2.5   $ 2.50        
Interest rate payable on notes                                                     7.00%                                  
Warrants Issued                       361,000     200,000 50,000                       986,983     1,760,712       422,830       422,830     373,730    
Period of warrants                                                                                     3 years  
Warrants, exercise price     $ 1.00 $ 1.00 $ 1.00 $ 1.00 $ 3.13     $ 1.00 $ 1.00   $ 2                             $ 1     $ 1.00               $ 3.13       $ 1.00  
Period from which Warrants Exercisable                                                       Beginning on the six-month anniversary of the date of issuance until the warrant expiration date.       Beginning on the six-month anniversary date of issuance until the warrant expiration date.                        
Derivative liabilities                                                         4,600,000       8,700,000   6,700,000   4,800,000   6,700,000          
Loss on embedded derivative                                                         2,300,000       4,400,000           1,900,000          
Fair value of embedded derivative liability                                                         0       0   0       0          
Converted accounts payable related to private placement of convertible notes                                                             163,000                          
Notes would automatically converted into common stock on or before due date when                                                                           The notes were automatically convertible into shares of the Company's common stock in the event that on or before the note due date either (a) the Company's common stock was traded at a price per share of $6.25 or higher for five (5) consecutive trading days, or (b) the Company consummated a financing in the amount of at least $5 million.            
Investor receives number of warrants                                                                     Equal to twenty-five percent (25%) of the investor's note to the Company.       Equal to twenty-five percent (25%) of the investor's note to the Company.          
Proceeds from exercise of warrants                       223,000 515,000 49,000                                                         2,400,000  
Interest expense on debt     24,000 52,000           24,000                                     15,000 62,000     28,000 109,000     1,500,000   232,000          
Value of warrants on relative fair value basis using Black-Scholes option pricing model                                                                         937,000              
Accrued Interest                                                                     69,628,000       69,628,000   69,628      
Accrued Interest Paid To Note Holders                                                                     10,277,000       10,277,000   10,277      
Notes converted to common stock, amount                                                                       575,000                
Notes converted, original debt, amount                                                                       4,200,000                
Proceeds from public offering pursuant to registration statement on form S-3 (in excess)                                                                               5,000,000        
Bonus interest feature common stock issued                                                                     99,461       99,461 99,461        
Discounted warrant exercise price                                                                                     $ 0.88  
Shares issued on warrant exercise 390,672 792,086           792,086 1,235,636 348,464                                                                 2,766,857  
Shares issued of unregistered common stock to note holders                                                                     27,851       27,851          
Warrant exercise price on replacement of previously issued warrants                                                                                     $ 1.38  
Warrants revalued on replacement                                                                                       4,335,785
Fair value of shares issued                                                                     397,845                  
Convertible debt outstanding                       $ 0 $ 0 $ 0