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Earnings/(loss) per share (Tables)
12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Basic and Diluted Earnings Per Share Calculation

The Company calculates basic and diluted earnings per share as follows:

 

     Year Ended December 31,  
     2016      2017      2018  

Numerator

        

Net loss

     (7,798,300      (1,218,237      (12,276,520

Less: Undistributed earnings allocated to non-vested shares

     —          —          —    
  

 

 

    

 

 

    

 

 

 

Net loss attributable to common shareholders, basic

     (7,798,300      (1,218,237      (12,276,520
  

 

 

    

 

 

    

 

 

 

Denominator

        

Weighted average number of shares outstanding, basic and diluted

     39,824,038        39,809,364        39,860,563  
  

 

 

    

 

 

    

 

 

 

Loss per share, basic and diluted

     (0.20      (0.03      (0.31