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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2012
Stockholders' Equity [Abstract]  
Summary of the status of warrants outstanding and exercisable
 
2012
   
2011
 
Exercise Price
 
Number of
Shares
   
Average Remaining
Contractual Life
   
Average Exercise
Price
   
Number of
Shares
   
Average Remaining
Contractual Life
 
$3.20
    840,454       0.43     $ 3.20       840,454       1.43