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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 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 earnings per share from continuing operations:
 
Year Ended December 31,
(In thousands, except per share data)
2017
 
2016
 
2015
Numerator
 
 
 
 
 
Income (loss) from continuing operations - basic
$
11,219

 
$
(40,712
)
 
$
(90,828
)
    Assumed conversions of 2017 Convertible Notes
—

 
—

 
—

Adjusted income (loss) from continuing operations - diluted
$
11,219

 
$
(40,712
)
 
$
(90,828
)
 
 
 
 
 
 
Denominator
 
 
 
 
 
Basic - weighted average common shares outstanding
85,421

 
83,697

 
82,722

     Dilutive effect of stock options and restricted stock awards
2,554

 
—

 
—

     Dilutive effect of 2017 Convertible Notes
—

 
—

 
—

Dilutive effect of 2021 Convertible Notes
—

 
—

 
—

Diluted - weighted average common shares outstanding
87,975

 
83,697

 
82,722

 
 
 
 
 
 
Income (loss) from continuing operations per common share
 
 
 
 
 
     Basic
$
0.13

 
$
(0.49
)
 
$
(1.10
)
     Diluted
$
0.13

 
$
(0.49
)
 
$
(1.10
)
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:
 
Year Ended December 31,
(In thousands)
2017
 
2016
 
2015
Stock options and restricted stock-based awards
7,419

 
7,482

 
3,884

2017 Convertible Notes
5,702

 
14,295

 
15,682

2021 Convertible Notes
—

 
—

 
—