v2.4.0.6
Warrants (Tables) (Warrant [Member])
6 Months Ended
Jun. 30, 2012
Warrant [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted-average assumptions were utilized in the fair value calculations for warrants granted
   
Six Months Ended
   
Six Months Ended
 
   
June 30, 2012
   
June 30, 2011
 
Expected dividend yield
   
0
%
   
0
%
Expected stock price volatility
   
97-98
%
   
97-98
%
Risk-free interest rate
   
2.32-3.03
%
   
3.95-4.24
%
Expected life of warrants
 
7.8-9.9 years
   
8.8-9.9 years
 
Summary of the status of Company’s warrants granted
 

 
 
   
Number of Shares
Remaining
Warrants
   
Weighted
Average
Exercise Price
   
Weighted-Average
Remaining
Contractual Term
   
Aggregate
Intrinsic Value
 
Outstanding at January 1, 2012
   
1,651,250
   
$
5.61
             
Warrants granted during 2012
   
48,000
   
$
10.00
             
Warrants expired/cancelled during 2012
   
0
                     
Outstanding at June 30,2012
   
1,699,250
   
$
5.73
     
8.04
   
$
0
 
Exercisable at June 30, 2012
   
1,087,500
   
$
5.00
     
7.83
   
$
0