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Earnings per share
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Earnings per share Earnings per share
Our earnings per share (basic and diluted) are presented below (in thousands, except per share amounts):
Quarter ended June 30,Six months ended June 30,
2022202120222021
Net Income$131,940 $106,854 $266,227 $219,686 
Net income attributable to the noncontrolling interest(371)(227)(424)(442)
Adjustment of redeemable noncontrolling interest to redemption value36 (76)(212)(148)
Earnings available to common shareholders$131,605 $106,551 $265,591 $219,096 
Weighted average number of common shares outstanding - basic
223,675 221,522 223,197 221,064 
Effect of dilutive securities:
Restricted stock units466 718 393 564 
Performance shares348 265 277 224 
Stock options— 1 — 3 
Weighted average number of common shares outstanding - diluted224,489 222,506 223,867 221,855 
Earnings per share - basic$0.59 $0.48 $1.19 $0.99 
Earnings per share - diluted$0.59 $0.48 $1.19 $0.99 

Our calculation of diluted earnings per share includes the dilutive effects for the assumed vesting of outstanding restricted stock units and performance shares.