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Net (Loss) Income Per Share (Tables)
 6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Calculation of basic and diluted net income (loss) per share attributable to common stockholders
The following table presents the calculations of basic and diluted net (loss) income per share (in thousands, except per share data):
 
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2012
 
2011
 
2012
 
2011
Numerator:
 

 
 

 
 
 
 
(Loss) income from continuing operations
$
(1,284
)
 
$
4,230

 
$
276

 
$
4,432

Gain (loss) from discontinued operations, net of tax
885

 
(837
)
 
(2,113
)
 
(2,165
)
Net (loss) income
$
(399
)
 
$
3,393

 
$
(1,837
)
 
$
2,267

Less: Accrued dividend on Series B mandatorily redeemable convertible preferred stock plus an 8% non-cumulative dividend on Series A and Series C mandatorily redeemable convertible preferred stock
—

 
—

 
—

 
294

Net (loss) income attributable to common stockholders
$
(399
)
 
$
3,393

 
$
(1,837
)
 
$
1,973

Denominator:
 

 
 

 
 
 
 
Weighted average number of common shares outstanding – basic
24,895

 
23,411

 
25,151

 
20,641

Weighted average number of common shares outstanding – diluted
25,243

 
25,838

 
25,570

 
23,006

Net (loss) income per share – basic
 

 
 

 
 
 
 
Continuing operations
$
(0.05
)
 
$
0.18

 
$
—

 
$
0.20

Discontinued operations
0.03

 
(0.04
)
 
(0.08
)
 
(0.10
)
Net (loss) income per share attributable to common stockholders
$
(0.02
)
 
$
0.14

 
$
(0.08
)
 
$
0.10

Net (loss) income per share – diluted
 

 
 

 
 
 
 
Continuing operations
$
(0.05
)
 
$
0.17

 
$
—

 
$
0.19

Discontinued operations
0.03

 
(0.04
)
 
(0.08
)
 
(0.10
)
Net (loss) income per share attributable to common stockholders
$
(0.02
)
 
$
0.13

 
$
(0.08
)
 
$
0.09
Schedule of antidilutive securities excluded from computation of earnings per share
For the three and six months ended June 30, 2012 and 2011, the following securities were not included in the calculation of fully diluted shares outstanding, as the effect would have been anti-dilutive (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2012
 
2011
 
2012
 
2011
Weighted average common stock warrants
17

 
—

 
17

 
3

Weighted average outstanding unexercised options and RSUs
4,522

 
118

 
4,208

 
79

Weighted average mandatorily redeemable convertible preferred stock
—

 
—

 
—

 
1,961

Total weighted average anti-dilutive shares
4,539

 
118

 
4,225

 
2,043