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Computation of Net Loss from Continuing Operations per Share of Common Stock (Notes)
 12 Months Ended
Dec. 31, 2018
Earnings Per Share, Basic [Abstract]  
Earnings Per Share [Text Block]
Computation of Net Loss Per Share of Common Stock
The following table identifies the components of net loss per basic and diluted share (in thousands, except for per share data):
 
Year Ended December 31,
 
2018
 
2017
 
2016
Net loss per share – basic
 
 
 
 
 
Net loss
$
(3,617
)
 
$
(11,724
)
 
$
(11,175
)
Weighted average shares outstanding – basic
9,499

 
9,347

 
9,232

Net loss per share – basic
$
(0.38
)
 
$
(1.25
)
 
$
(1.21
)
 
 
 
 
 
 
Net loss per share – diluted
 
 
 
 
 
Loss attributable to common shareholders:
 
 
 
 
 
Net loss
$
(3,617
)
 
$
(11,724
)
 
$
(11,175
)
Numerator effect of dilutive securities
 
 
 
 
 
Warrants
(161
)
 
—

 
(137
)
Loss attributable to common shareholders
$
(3,778
)
 
$
(11,724
)
 
$
(11,312
)
Weighted averages shares outstanding – diluted:
 
 
 
 
 
Weighted average shares outstanding – basic
9,499

 
9,347

 
9,232

Denominator effect of dilutive securities
 
 
 
 
 
Warrants
107

 
—

 
—

Weighted average shares outstanding – diluted
9,606

 
9,347

 
9,232

Net loss per share – diluted
$
(0.39
)
 
$
(1.25
)
 
$
(1.23
)

Stock options, warrants and restricted stock units to acquire common shares excluded from the computation of diluted weighted-average common shares as their effect is anti-dilutive were as follows (in thousands):
 
Year Ended 
 December 31,
 
2018
 
2017
Stock options
1,273

 
1,507

Warrants
348

 
314

Restricted stock units
150

 
139

Total anti-dilutive
1,771

 
1,960