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Shareholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Summary of Table Reconciling Basic and Diluted Net Income Per Share

The following table reconciles basic and diluted net income per share for the years ended December 31.

 

(dollars and shares in thousands,

 

Years Ended December 31,

 

except per share data)

 

2019

 

 

2018

 

 

2017

 

Basic Net Income Per Share

 

 

 

 

 

 

 

 

 

 

 

 

Net income

 

$

238,206

 

 

$

190,830

 

 

$

95,725

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted average common shares outstanding

 

 

171,907

 

 

 

155,675

 

 

 

137,821

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic Net Income Per Share

 

$

1.39

 

 

$

1.23

 

 

$

0.69

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diluted Net Income Per Share

 

 

 

 

 

 

 

 

 

 

 

 

Net income

 

$

238,206

 

 

$

190,830

 

 

$

95,725

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted average common shares outstanding

 

 

171,907

 

 

 

155,675

 

 

 

137,821

 

Effect of dilutive securities:

 

 

 

 

 

 

 

 

 

 

 

 

Restricted stock

 

 

733

 

 

 

796

 

 

 

599

 

Stock options (1)

 

 

47

 

 

 

68

 

 

 

93

 

Weighted average shares outstanding

 

 

172,687

 

 

 

156,539

 

 

 

138,513

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diluted Net Income Per Share

 

$

1.38

 

 

$

1.22

 

 

$

0.69

 

 

(1)

Options to purchase 14 thousand shares, 14 thousand shares, and 0.1 million shares outstanding at December 31, 2019, 2018, and 2017, respectively, were not included in the computation of net income per diluted share because the exercise price of these options was greater than the average market price of the common shares and, therefore, the effect would be antidilutive.