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Net Loss Per Common Share
 12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Net Loss Per Common Share
Net Loss Per Common Share
 
The following reflects the net loss attributable to common shareholders and share data used in the basic and diluted earnings per share computations using the two class method:
 
 
Year Ended December 31,
(Amounts in thousands, except per share amounts)
 
2018
 
2017
 
2016
Numerator:
 
 

 
 

 
 
Net loss
 
$
(8,137
)
 
$
(17,286
)
 
$
(19,566
)
Less: earnings attributable to convertible preferred stock
 
—

 
—

 
7,579

Numerator of basic and diluted EPS
 
$
(8,137
)
 
$
(17,286
)
 
$
(27,145
)
Denominator:
 
 

 
 

 
 

Denominator for basic and diluted EPS: weighted-average common shares outstanding
 
40,242

 
33,355

 
23,093

Net loss per share attributable to common shareholders (basic and diluted)
 
$
(0.20
)
 
$
(0.52
)
 
$
(1.18
)

 
Common equivalent shares and treasury stock are not included in the diluted per share calculation where the effect of their inclusion would be anti-dilutive.  The aggregate number of common equivalent shares (related to options, warrants, and preferred stock) that have been excluded from the computations of diluted net loss per common share for the years ended December 31, 2018, 2017 and 2016 was 4.8 million, 5.4 million and 5.3 million, respectively.