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Earnings (Loss) Per Share
 3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Earnings (Loss) Per Share
Note 15
Earnings (Loss) Per Share
Basic net income (loss) per share (EPS) is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income (loss) by the weighted average number of common and dilutive potential common shares outstanding during the period. Basic and diluted EPS (in thousands, except per share amounts):
 
 
Quarters Ended
March 31,
 
2016
 
2015
Net income (loss)
$
(15,171
)
 
$
(24,469
)
Weighted average common shares outstanding used to compute basic EPS
36,520

 
36,104

Dilutive effect of stock based awards
—

 
—

Weighted average common shares outstanding used to compute diluted EPS
36,520

 
36,104

 
 
 
 
Basic EPS
$
(0.42
)
 
$
(0.68
)
Diluted EPS
$
(0.42
)
 
$
(0.68
)

During the quarter ended March 31, 2016 and March 31, 2015, 5.3 million and 6.3 million shares of common stock, respectively, of potentially issuable shares from stock awards were excluded from the calculation of diluted EPS because of their antidilutive effect.