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Stock Warrants (Tables)
 9 Months Ended
Sep. 30, 2015
Stock Warrants [Line Items]  
Summary of stock warrant activities

  

Nine months ended

September 30, 2015

  

Nine months ended

September 30, 2014

 
  Number  Weight average exercise price  Number  Weight average exercise price 
Outstanding and exercisable at beginning of the period  820,312  $1.71      $ 
Issued during the period  -   -   820,312   1.71 
Exercised during the period  -   -         
Cancelled or expired during the period  -   -         
Outstanding and exercisable at end of the period  820,312  $1.71   820,312  $1.71 
Range of exercise price  

$1.70 to $2.00 

   $1.70 to $2.00
Date of Issuance August 27, 2014 to September 2, 2019 [Member]  
Stock Warrants [Line Items]  
Fair value of warrants issued was estimated by using the Binominal pricing model
Terms of warrants  5 years 
Expected volatility  72.0%
Risk-free interest rate  1.69%
Expected dividend yield  0.81%
Date of Issuance September 3, 2014 to June 26, 2019 [Member]  
Stock Warrants [Line Items]  
Fair value of warrants issued was estimated by using the Binominal pricing model
Terms of warrants  4.81 years 
Expected volatility  69.8%
Risk-free interest rate  1.62%
Expected dividend yield  0.81%