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Earnings per Share (Tables)
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Summary of Basic and Diluted Weighted Average Shares Outstanding

The following table presents information about basic and diluted weighted average shares outstanding:

 

 

 

Three months ended March 31,

( in thousands )

 

2017

 

 

2016

 

 

Basic weighted average shares outstanding

 

 

129,921

 

 

 

129,295

 

 

Effect of dilutive securities:

 

 

 

 

 

 

 

 

 

Unvested share units and shares held by employees

 

 

278

 

 

 

208

 

 

Stock options held by employees and directors

 

 

544

 

 

 

287

 

 

Diluted weighted average shares outstanding

 

 

130,743

 

 

 

129,790

 

 

Anti-dilutive share awards

 

 

279

 

 

 

1,711