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Income Per Share (Tables)
9 Months Ended
Sep. 30, 2019
Income Per Share  
Weighted Average Number of Common Shares Outstanding

The weighted average number of common shares outstanding is calculated as follows (in thousands):

Three Months Ended

Nine Months Ended

September 30, 

September 30, 

    

2019

    

2018

    

2019

    

2018

Weighted average shares outstanding - basic

51,444

51,325

51,411

51,281

Effect of dilutive stock-based compensation

125

194

152

195

Effect of dilutive put rights

 

263

 

 

263

 

Weighted average shares outstanding - diluted

 

51,832

 

51,519

 

51,826

 

51,476