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Net Loss Per Common Share
 12 Months Ended
Dec. 31, 2019
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)
 
2019
 
2018
 
2017
Numerator:
 
 

 
 

 
 
Net loss
 
$
(9,665
)
 
$
(8,137
)
 
$
(17,286
)
Denominator:
 
 

 
 

 
 

Denominator for basic and diluted EPS: weighted-average common shares outstanding
 
44,180

 
40,242

 
33,355

Net loss per share attributable to common shareholders (basic and diluted)
 
$
(0.22
)
 
$
(0.20
)
 
$
(0.52
)
 
 
 
 
 
 
 
Anti-dilutive shares excluded from the calculation of diluted earnings per share(a) (amounts in millions):
 
 
 
 
 
 
Stock options
 
5.1

 
4.8

 
4.6

Restricted stock unit awards
 
0.2

 
—

 
—

Warrants
 
—

 
—

 
0.9

(a) Common equivalent shares are not included in the diluted per share calculation where the effect of their inclusion would be anti-dilutive.