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Shareholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2012
Stockholders' Equity Note [Abstract]  
Schedule of Stockholders Equity [Table Text Block]
During 2012 the Company sold, pursuant to the Company’s effective registration statement filed with the SEC, equity in the Company as follows:
Date Shares issued Warrants issued Unit price Proceeds
July 30, 2012   589,227       117,846       $ 2.97       $ 1,745,549 *
August 28, 2012 1,900,000 380,000 $ 2.97 $ 5,229,201 **
October 3, 2012 1,250,000 250,000 $ 4.49 $ 5,275,750 ***
Total 3,739,227 747,846 $      12,250,500
____________________
 
(*) Net of fees of $4,455
(**) Net of fees of $413,719
(***)         Net of fees of $336,750

     During 2010 the Company sold, pursuant to the Company’s effective registration statement filed with the SEC, equity in the Company as follows:

Date Shares issued Warrants issued Unit price Proceeds
March 3, 2010            588,602            117,719       $     2.75       $     1,618,653
September 17, 2010 641,026 128,205 $ 3.90 $ 2,490,723 *
September 27, 2010 194,118 38,824   $ 4.25 $ 825,000
December 1, 2010 295,000     59,000 $ 5.00   $ 1,475,000
       Total   1,718,746   343,748 $ 6,409,376
____________________

*       Net of fees of $9,277
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The Company valued these 2010 grants using the Black-Scholes option pricing model with the following assumptions:
 
Fair value on grant date $ 2.31
Expected dividend yield --
Expected volatility 76%
Risk free interest rate 2.57%
Expected term of the option 5 years
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Activity in stock options is summarized below:

Weighted
Average
Number Weighted Remaining
of Shares Average Contractual Aggregate
Subject to Exercise Term Intrinsic
        Option       Price       (Years)       Value
Balance at December 31, 2009 2,011,180 $ 13.82 3.9 $ --
       Granted 176,000 $ 3.69
       Cancelled (452,981 ) $ 18.90
       Exercised -- $ --
Balance at December 31, 2010 1,734,199 $ 11.64 4.3 $ 281,600
       Granted -- $ --
       Cancelled (379,550 ) $ 20.43
       Exercised (85,000 ) $ 3.72
Balance at December 31, 2011 1,269,649 $ 9.48 4.2 $ --
       Cancelled (151,750 ) $ 12.76
       Exercised -- --
Balance of December 31, 2012 1,117,899 $ 9.03 3.7 $ 4,250
Schedule Of Warrants [Table Text Block]

Activity in warrants is summarized below:

Number of Shares
Underlying Warrants
and Non-Employee Weighted Average
      Options Granted       Exercise Price
Balance at December 31, 2009 500,161 $ 6.00-9.00
       Exercised -- $ --
       Terminated                         (135,000 ) $ 7.50
       Issued 343,748 $ 5.91
Balance at December 31, 2010 708,909 $ 5.00-9.00
       Exercised (4,652 ) $ 5.64
       Terminated -- $ --
       Issued -- $ --
Balance at December 31, 2011 704,257 $ 5.00-9.00
       Exercised -- --
       Terminated -- --
       Issued 807,846 $ 5.12
Balance at December 31, 2012 1,512,103 $ 5.56