XML 115 R24.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Earnings Per Share
12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Share
(17)          Earnings Per Share

Basic earnings per share are computed by dividing earnings applicable to common stock by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect the potential dilution of common stock equivalent shares that could occur if unvested shares were to vest. Common stock equivalent shares are calculated using the treasury stock method, as applicable. The dilutive effect is computed by dividing earnings applicable to common stock by the weighted average number of common shares outstanding plus the effect of the outstanding unvested restricted stock and performance share awards. Average shares used in computing the basic and diluted earnings per share are as follows:
 
December 31,
 
2019
 
2018
 
2017
Basic computation
50,428,560

 
49,984,562

 
48,557,599

Dilutive effect of
 
 
 
 
 
Performance and restricted share awards (1)
323,298

 
252,909

 
97,722

Diluted computation
50,751,858

 
50,237,471

 
48,655,321

 _____________________

(1)           Performance share awards are included in diluted weighted average number of shares outstanding based upon what would be issued if the end of the most recent reporting period was the end of the term of the award.