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Weighted Average Common Shares
 3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Weighted Average Common Shares Weighted Average Common Shares (share amounts in thousands)
The following table provides a reconciliation of the weighted average number of common shares used in the calculation of basic and diluted earnings per share (in thousands):
 Three Months Ended March 31,
 20222021
Weighted average common shares for basic earnings per share238,149 237,834 
Effect of dilutive securities: unvested share awards49 — 
Weighted average common shares for diluted earnings per share (1)
238,198 237,834 
(1) For the three months ended March 31, 2021, 20 unvested common shares were not included in the calculation of diluted earnings per share because to do so would have been antidilutive.