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Net Income (Loss) Per Share (Tables)
 12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
 
Year ended December 31,
In thousands except per share amounts
2018
 
2017
 
2016
Net income (loss) available to common stockholders:
 
 
 
 
 
Income (loss) from continuing operations
$
(48,955
)
 
$
10,925

 
$
22,435

Income (loss) from discontinued operations
550

 
(12,244
)
 
32,917

 
$
(48,405
)
 
$
(1,319
)
 
$
55,352

 
 
 
 
 
 
Weighted average shares:
 
 
 
 
 
Basic
188,606

 
180,096

 
159,853

Effect of stock-based compensation plans
—

 
4,048

 
3,606

Diluted
188,606


184,144


163,459

 
 
 
 
 
 
Basic income (loss) per share:
 
 
 
 
 
Income (loss) from continuing operations
$
(0.26
)
 
$
0.06


$
0.14

Income (loss) from discontinued operations
—

 
(0.07
)

0.21

Basic(1)
$
(0.26
)

$
(0.01
)

$
0.35

 
 
 
 
 
 
Diluted income (loss) per share:
 
 
 
 
 
Income (loss) from continuing operations
$
(0.26
)
 
$
0.06

 
$
0.14

Income (loss) from discontinued operations
—

 
(0.07
)
 
0.20

Diluted(1)
$
(0.26
)

$
(0.01
)

$
0.34