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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2018
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) from continuing operations per share:
 
Year Ended December 31,
(In thousands, except per share data)
2018
 
2017
 
2016
Numerator
 
 
 
 
 
Income (loss) from continuing operations - basic and diluted
$
32,281

 
$
11,219

 
$
(40,712
)
 
 
 
 
 
 
Denominator
 
 
 
 
 
Weighted average common shares outstanding - basic
89,996

 
85,421

 
83,697

     Dilutive effect of stock options and restricted stock awards
2,385

 
2,554

 
—

Dilutive effect of 2021 Convertible Notes
544

 
—

 
—

Weighted average common shares outstanding - diluted
92,925

 
87,975

 
83,697

 
 
 
 
 
 
Income (loss) from continuing operations per common share
 
 
 
 
 
Basic
$
0.36

 
$
0.13

 
$
(0.49
)
Diluted
$
0.35

 
$
0.13

 
$
(0.49
)
Schedule of weighted-average potential shares excluded from 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)
2018
 
2017
 
2016
Stock options and restricted stock awards
1,495

 
7,419

 
7,482

2017 Convertible Notes
—

 
5,702

 
14,295