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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Schedule of earnings per share, basic and diluted
The following table presents the reconciliation of the numerator and denominator for calculating net income (loss) per share:
 
Second Quarter
 
First Half
(In thousands, except per share data)
2017
 
2016
 
2017
 
2016
Numerator
 
 
 
 
 
 
 
Basic - net income (loss)
$
1,632

 
$
(13,904
)
 
$
649

 
$
(27,204
)
Assumed conversions of Convertible Notes due 2017
—

 
—

 
—

 
—

Diluted - adjusted net income (loss)
$
1,632

 
$
(13,904
)
 
$
649

 
$
(27,204
)
 
 
 
 
 
 
 
 
Denominator
 
 
 
 
 
 
 
Basic - weighted average common shares outstanding
84,653

 
83,457

 
84,404

 
83,358

Dilutive effect of stock options and restricted stock awards
2,662

 
—

 
2,695

 
—

Dilutive effect of Convertible Notes due 2017
—

 
—

 
—

 
—

Dilutive effect of Convertible Notes due 2021
—

 
—

 
—

 
—

Diluted - weighted average common shares outstanding
87,315

 
83,457

 
87,099

 
83,358

 
 
 
 
 
 
 
 
Net income (loss) per common share
 
 
 
 
 
 
 
Basic
$
0.02

 
$
(0.17
)
 
$
0.01

 
$
(0.33
)
Diluted
$
0.02

 
$
(0.17
)
 
$
0.01

 
$
(0.33
)
Schedule of diluted net income (loss) per share
We excluded the following weighted-average potential shares from the calculations of diluted net income (loss) per share during the applicable periods because their inclusion would have been anti-dilutive:
 
Second Quarter
 
First Half
(In thousands)
2017
 
2016
 
2017
 
2016
Stock options and restricted stock-based awards
2,464

 
7,220

 
2,381

 
6,742

Convertible Notes due 2017
7,569

 
14,666

 
7,569

 
14,973

Convertible Notes due 2021
—

 
—

 
—

 
—