XML 66 R39.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock Warrants (Tables)
 12 Months Ended
Dec. 31, 2018
Stock Warrants [Line Items]  
Summary of stock warrant activities
   December 31, 2018   December 31, 2017 
   Number   Weight average exercise price   Number   Weight average exercise price 
Outstanding and exercisable at beginning of the year   820,312   $1.71    820,312   $1.71 
Issued during the year   -    -    -    - 
Exercised during the year   -    -    -    - 
Cancelled or expired during the year   -    -    -    - 
Outstanding and exercisable at end of the year   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 [Member]  
Stock Warrants [Line Items]  
Schedule fair value of warrants issued was estimated by using 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 from September 3, 2014 to June 26, 2019 [Member]  
Stock Warrants [Line Items]  
Schedule fair value of warrants issued was estimated by using Binominal pricing model
Terms of warrants   4.81 years 
Expected volatility   69.8%
Risk-free interest rate   1.62%
Expected dividend yield   0.81%