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Net Loss Per Common Share (Tables)
 6 Months Ended
Jun. 30, 2019
Earnings Per Share [Abstract]  
Computations of basic and diluted earnings (loss) per common share
The following table sets forth the computations of basic and diluted net loss per common share for the three and six months ended June 30, 2019 and 2018 (in thousands, except per share data):  
 
 
Three Months
Ended June 30,
 
Six Months Ended June 30,

 
2019
 
2018
 
2019
 
2018
Numerator:
 
 
 
 
 
 
 
 
Net loss from continuing operations
 
$
(4,176
)
 
$
(2,880
)
 
$
(8,417
)
 
$
(5,208
)
Net loss from discontinued operations
 
$
(103
)
 
$
(26
)
 
$
(258
)
 
$
(359
)
 
 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
 
Weighted-average common shares outstanding
 
22,763

 
23,283

 
22,687

 
22,930

Basic and diluted net loss per common share from continuing operations
 
$
(0.18
)
 
$
(0.13
)
 
$
(0.37
)
 
$
(0.23
)
Basic and diluted net loss per common share from discontinued operations
 
—

 
—

 
(0.01
)
 
(0.01
)
Total basic and diluted net loss per common share
 
$
(0.18
)
 
$
(0.13
)
 
$
(0.38
)
 
$
(0.24
)
 
 
 
 
 
 
 
 
 
Anti-dilutive securities awarded under equity compensation plans excluded from diluted net loss per share calculation
 
4,277

 
3,783

 
4,277

 
3,783