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Stockholders' Equity (Details 1) (Warrant [Member], USD $)
6 Months Ended
Jun. 30, 2012
Warrant [Member]
 
Estimated assumptions of fair value warrants issued  
Expected volatility 52.00%
Risk-free interest rate 0.23%
Expected dividend yield 5.00%
Expected life (in years) 1 year 9 months
Per share grant date fair value of warrants issued $ 0.754