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EARNINGS PER SHARE
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
EARNINGS PER SHARE [Text Block]
EARNINGS PER SHARE:

 Basic earnings per share are calculated by dividing net income by the weighted-average shares of common stock outstanding during the period. Diluted earnings per share are calculated by dividing net income by the weighted-average shares of common stock and dilutive common equivalent shares outstanding during the period. Dilutive common equivalent shares included in this calculation consist of dilutive shares issuable upon the assumed exercise of outstanding common stock options, the assumed vesting of outstanding restricted stock units and performance-based awards, and the assumed issuance of awards under the stock purchase plan, as computed using the treasury stock method. Basic and diluted loss per share is calculated by dividing the net loss by the weighted-average shares of common stock outstanding during the period.

A summary of the earnings (loss) per share calculation is as follows (in thousands, except per share amounts):
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2013
 
2012
 
2013
 
2012
Basic earnings per share:
 
 
 
 
 
 
 
Net income (loss)
$
16,654

 
$
(44,406
)
 
$
41,229

 
$
(44,121
)
Weighted-average common shares
29,762

 
28,908

 
29,235

 
28,586

Basic earnings (loss) per share
$
0.56

 
$
(1.54
)
 
$
1.41

 
$
(1.54
)
Diluted earnings per share (1):
 
 
 
 
 
 
 
Net income (loss)
$
16,654

 
$
(44,406
)
 
$
41,229

 
$
(44,121
)
Weighted-average common shares
29,762

 
28,908

 
29,235

 
28,586

Effect of dilutive securities:

 

 

 

Employee stock plans
890

 
—

 
1,002

 
—

Diluted weighted-average common shares
30,652

 
28,908

 
30,237

 
28,586

Diluted earnings (loss) per share
$
0.54

 
$
(1.54
)
 
$
1.36

 
$
(1.54
)
_______________ 

(1)
The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share if the performance conditions have been satisfied as of the end of the reporting period and excludes such shares when the necessary conditions have not been met. The Company has excluded the shares underlying the 2013 and 2012 awards in the 2013 and 2012 calculation, respectively, as those shares were not contingently issuable as of the end of the period. 

In the three and nine months ended September 30, 2013, 35,000 shares and 149,000 shares, respectively, were not included in the computation of diluted earnings per share for the periods then ended because they were determined to be anti-dilutive. In the three and nine months ended September 30, 2012, all shares attributable to stock-based awards were excluded in the computation of diluted earnings per share, as the Company was in a net loss position.