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Earnings Per Share - (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The Company’s basic and diluted earnings (loss) per share amounts are as follows:

Three Months Ended June 30,
 
Six Months Ended June 30,

2014

2013
 
2014
 
2013
Numerator:


 


 
 
 
 
Net income (loss)
$
(4,412
)
 
$
759

 
$
(5,136
)
 
$
1,152

Denominator:


 
 

 
 
 
 
Basic earnings (loss) per share - weighted average shares outstanding
33,240

 
32,567

 
33,186

 
32,633

Effect of potential dilutive securities:
 
 
 
 
 
 
 
Employee stock options and restricted stock units - dilutive shares
—

 
588

 
—

 
651

     Diluted earnings (loss) per share - weighted average shares outstanding
33,240

 
33,155

 
33,186

 
33,284

Earnings (loss) per share:
 

 
 

 
 

 
 

Basic
$
(0.13
)
 
$
0.02

 
$
(0.15
)
 
$
0.04

Diluted
$
(0.13
)
 
$
0.02

 
$
(0.15
)
 
$
0.03