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Share-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of share - based compensation
  Three months ended March 31,
  2019   2018
Expected life (years) N/A   N/A
Dividend yield N/A   N/A
Expected volatility N/A   N/A
Risk free interest rates N/A   N/A
Weighted average fair value of options at grant date N/A   N/A