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Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2016
Accounting Policies [Abstract]  
Components of basic and diluted weighted-average shares
The following table presents information about basic and diluted weighted-average shares outstanding:
 
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
(in thousands)
 
2016
 
2015
 
2016
 
2015
 
 
 
 
 
 
 
 
 
Numerator (for basic and diluted earnings per share)
 
 
 
 
 
 
 
 
Income (loss) from continuing operations
 
$
11,488

 
$
(12,955
)
 
$
16,376

 
$
(21,070
)
Less income allocated to RSUs
 
(159
)

—

 
(203
)

—

Numerator for basic and diluted earnings per share from continuing operations
 
$
11,329

 
$
(12,955
)
 
$
16,173

 
$
(21,070
)
Denominator
 
 
 
 
 
 
 
 
Basic weighted-average shares outstanding
 
83,773


83,903


83,869


70,692

Effect of dilutive securities:
 



 



Stock options held by employees and directors
 
278


—

 
315


—

Diluted weighted-average shares outstanding
 
84,051

 
83,903

 
84,184

 
70,692

Anti-dilutive securities (1)
 
—

 
2,230

 
—

 
2,230

(1) Amount outstanding at balance sheet date, before application of the treasury stock method and not weighted for period outstanding.