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Net Income Per Share (Tables)
 6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Basic and diluted net income per share
The following table sets forth the calculation of basic and diluted net income (loss) per share (in thousands, except per share amounts):
 
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2018
 
2017
 
2018
 
2017
Numerator:
 
 
 
 
 
 
 
Income from continuing operations
$
477

 
$
633

 
$
2,979

 
$
1,493

Income from discontinued operations, net of income taxes
—

 
54

 
—

 
1,938

Net income
$
477

 
$
687

 
$
2,979

 
$
3,431

Denominator:
 
 
 
 
 
 
 
Weighted average common shares—basic
12,462

 
13,030

 
12,462

 
13,224

Effect of dilutive securities: stock options
318

 
28

 
160

 
5

Weighted average common shares—diluted
12,780

 
13,058

 
12,622

 
13,229

Income per share—basic:
 
 
 
 
 
 
 
Continuing operations
$
0.04

 
$
0.05

 
$
0.24

 
$
0.11

Discontinued operations
—

 
—

 
—

 
0.15

Net income per share—basic
$
0.04

 
$
0.05

 
$
0.24

 
$
0.26

Income per share—diluted:
 
 
 
 
 
 
 
Continuing operations
$
0.04

 
$
0.05

 
$
0.24

 
$
0.11

Discontinued operations
—

 
—

 
—

0.14

0.15

Net income per share—diluted
$
0.04

 
$
0.05

 
$
0.24

 
$
0.26