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Net (Loss) Income Per Share (Tables)
9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Diluted included in Calculation
The following common stock equivalents, using the treasury-stock method, were included in the calculation of diluted net (loss) income per share for the periods indicated.
 
Three Months Ended September 30,
 
Nine Months Ended
September 30,
 
2017
 
2016
 
2017
 
2016
Stock options

 
891,341

 

 
776,580

Unvested restricted stock

 

 

 

Restricted stock units

 
37,063

 

 
15,156

Common stock warrants

 

 

 

 

 
928,404

 

 
791,736

Schedule of Net Loss Per Share, Diluted
The following common stock equivalents were excluded from the calculation of diluted net (loss) income per share for the periods indicated because including them would have had an anti-dilutive effect or the exercise prices were greater than the average market price of the common shares.
 
Three Months Ended September 30,
 
Nine Months Ended
September 30,
 
2017
 
2016
 
2017
 
2016
Stock options
1,965,206

 
1,732,954

 
1,965,206

 
1,829,193

Unvested restricted stock
8,860

 
26,580

 
8,860

 
26,580

Common stock warrants
926,840

 
926,840

 
926,840

 
926,840

 
2,900,906

 
2,686,374

 
2,900,906

 
2,782,613