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Loss Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Reconciliation of Basic Loss Per Common Share to Diluted Loss Per Common Share
A reconciliation of basic loss per common share to diluted loss per common share is as follows (in thousands, except per share data):
 
Year Ended December 31,
 
2017
 
2016
Net loss—basic and diluted:
 
 
 
Loss from continuing operations
$
(11,790
)
 
$
(3,439
)
Loss from discontinued operations
(2,534
)
 
(27,030
)
Net loss available to common shareholders—basic and diluted
$
(14,324
)
 
$
(30,469
)
Weighted average common shares outstanding:
 
 
 
Weighted average common shares outstanding—basic
23,885

 
23,259

Dilutive effect of common stock equivalents
—

 
—

Weighted average common shares outstanding—diluted
23,885

 
23,259

Net loss per common share—basic and diluted:
 
 
 
Loss from continuing operations
$
(0.49
)
 
$
(0.15
)
Loss from discontinued operations
(0.11
)
 
(1.16
)
Net loss per common share—basic and diluted
$
(0.60
)
 
$
(1.31
)