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EARNINGS (LOSS) PER SHARE (Tables)
 3 Months Ended
Mar. 31, 2018
EARNINGS (LOSS) PER SHARE [Abstract]  
Reconciliation of Net Income and Weighted Average Shares Used in Computing Basic and Diluted Net Income per Share
A reconciliation of net income and weighted average shares used in computing basic and diluted net income per share is as follows:

  
Three Months
Ended March 31,
2018
  
Three Months
Ended March 31,
2017
 
Net income (loss) attributable to common stock holders
 
$
(2,129,170
)
 
$
(1,221,953
)
Weighted average common shares outstanding
  
18,564,197
   
14,094,536
 
Basic net income (loss) per share of common stock
 
$
(0.11
)
 
$
(0.09
)
Diluted net income (loss) per share of common stock
 
$
(0.11
)
 
$
(0.09
)