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NET INCOME (LOSS) PER COMMON SHARE (Tables)
 3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table is a reconciliation of net income (loss) and the shares used in calculating basic and diluted net income (loss) per common share for the three months ended March 31, 2014 and 2013 (in thousands, except share and per share data):
 
 
Three Months Ended March 31,
 
 
2014
 
2013
Numerator:
 
 
 
 
Net income (loss)
 
$
4,022

 
$
(4,758
)
Denominator:
 
 
 
 
Weighted average common shares outstanding – Basic
 
46,177,661

 
45,823,414

Effect of dilutive shares:
 
 
 
 
Common stock equivalents arising from stock options and ESPP
 
275,392

 
—

Restricted stock awards and units and performance units
 
198,385

 
—

Weighted average common shares outstanding – Diluted
 
46,651,438

 
45,823,414

Net income (loss) per common share:
 
 
 
 
Basic
 
$
0.09

 
$
(0.10
)
Diluted
 
$
0.09

 
$
(0.10
)