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Earnings (Loss) Per Common Share (Tables)
 9 Months Ended
Sep. 30, 2017
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 earnings (loss) per common share for the three and nine months ended September 30, 2017 and 2016 (in thousands, except per share data):
 
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 Basic earnings (loss) per common share:

 
2017
 
2016
 
2017
 
2016
Numerator:
 
 
 
 
 
 
 
 
Net earnings (loss) from continuing operations
 
$
1,077

 
$
2,150

 
$
(1,096
)
 
$
2,052

Net (loss) earnings from discontinued operations
 
$
(344
)
 
$
133

 
$
(1,029
)
 
$
(914
)
 
 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
 
Weighted-average common shares outstanding
 
22,498

 
21,847

 
22,225

 
22,084

Effect of dilutive securities from stock-based compensation plans
 
263

 
27

 
—

 
30

Weighted-average diluted common shares outstanding
 
22,761

 
21,874

 
22,225

 
22,114

 
 
 
 
 
 
 
 
 
Basic earnings (loss) per common share from continuing operations
 
$
0.05

 
$
0.10

 
$
(0.05
)
 
$
0.09

Basic earnings (loss) per common share from discontinued operations
 
(0.02
)
 
0.01

 
(0.05
)
 
(0.04
)
Total basic earnings (loss) per common share
 
$
0.03

 
$
0.11

 
$
(0.10
)
 
$
0.05

 
 
 
 
 
 
 
 
 
Diluted earnings (loss) per common share from continuing operations
 
$
0.05

 
$
0.10

 
$
(0.05
)
 
$
0.09

Diluted earnings (loss) per common share from discontinued operations
 
(0.02
)
 
0.01

 
(0.05
)
 
(0.04
)
Total diluted earnings (loss) per common share
 
$
0.03

 
$
0.11

 
$
(0.10
)
 
$
0.05