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Net Income Per Share (Tables)
3 Months Ended
Mar. 31, 2020
Earnings Per Share [Abstract]  
Reconciliation of Weighted Average Common Shares Outstanding
A reconciliation of weighted average shares outstanding used to calculate basic net income per share and diluted net income per share follows (in thousands, except per share data):
 
Three months ended March 31
 
2020
 
2019
Weighted average shares outstanding (basic)
163,475

 
169,884

Impact of common stock equivalents
942

 
1,025

Weighted average shares outstanding (diluted)
164,417

 
170,909

Per share:
 
 
 
Basic
$
0.16

 
$
0.33

Diluted
0.16

 
0.33