Annual report pursuant to Section 13 and 15(d)

Stock Option Plan (Details Textual)

v2.4.0.6
Stock Option Plan (Details Textual) (USD $)
1 Months Ended 12 Months Ended
Feb. 29, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Dec. 31, 2007
Dec. 31, 2006
Stock Options [Member]
               
Stock Option Plan (Textual)                
Share based payment award vesting period   4 years            
Stock option granted to employees to purchase common stock   2,056,275   33,300   69,941 113,220 206,060
Stock option granted to purchase common stock, exercise price       $ 0.90   $ 0.90 $ 1.35 $ 1.35
Stock option granted to purchase common stock, term   10 years   10 years   10 years 10 years 10 years
Fair value of stock option   $ 1,519,777   $ 24,996   $ 44,159 $ 137,652 $ 1,051,281
Discount rate   1.80%   2.16%   3.46% 3.46% 4.29%
Expected life   7 years   5 years   5 years 5 years 5 years
Expected volatility       171.00%   139.00% 143.00% 156.00%
Expected dividends   0.00%   0.00%   0.00% 0.00% 0.00%
Stock option cancelled during period         20,613      
Stock option forfeitures during period         128,050      
Employee stock option units repriced 273,859              
Outstanding stock option exercise price after repricing of stock option $ 1.28              
Share based compensation cost after repricing of stock options 34,879              
Unrecognized share based compensation expense   1,998,435 14,528          
Recorded option expense   $ 266,172 $ 19,935          
Minimum [Member] | Stock Options [Member]
               
Stock Option Plan (Textual)                
Share based payment award vesting period       4 years   4 years 4 years 4 years
Stock option granted to purchase common stock, exercise price   $ 0.78            
Expected volatility   160.44%            
Maximum [Member] | Stock Options [Member]
               
Stock Option Plan (Textual)                
Share based payment award vesting period       5 years   5 years 5 years 5 years
Stock option granted to purchase common stock, exercise price   $ 1.5            
Expected volatility   161.49%            
2003 Stock Plan [Member]
               
Stock Option Plan (Textual)                
Maximum granted option to purchase common stock   757,575            
Maximum granted option after amendment in 2008   978,154            
Share based payment award monthly vesting percentage   2.00%            
Increment in number of shares under plan   3,217,880            
Total shares reserved for issuance under plan   6,155,280            
2003 Stock Plan [Member] | Minimum [Member]
               
Stock Option Plan (Textual)                
Share based payment award vesting period   4 years            
2003 Stock Plan [Member] | Maximum [Member]
               
Stock Option Plan (Textual)                
Share based payment award vesting period   5 years            
2012 Employee Stock Option Plan [Member]
               
Stock Option Plan (Textual)                
Percentage of aggregate issued and outstanding common shares reserved under offering   15.00%            
Stock reserved for future issuance under ESOP   9,455,776