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Net Income Per Share (Notes)
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Net Income per Share
7.Net Income Per Share
We utilize the two-class method to compute net income per share. The two-class method allocates a portion of net income to participating securities, which includes unvested awards of share-based payments with non-forfeitable rights to receive dividends. Net income allocated to unvested share-based payments is excluded from net income allocated to common shares. Any undistributed losses resulting from dividends exceeding net income are not allocated to participating securities. Basic net income per share is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding during the period, plus the dilutive effect of time-vested and performance-based restricted stock units (“RSUs”).
The following table summarizes the net income allocated to common shares and the basic and diluted shares used in the net income per share computations:
Three Months Ended March 31,
(in thousands)20222021
Net income$69,884 $61,922 
Less distributed and undistributed earnings allocated to participating securities
(47)(197)
Net income allocated to common shares
$69,837 $61,725 
Weighted average common shares outstanding38,288 38,216 
Incremental shares from assumed time-vested and performance-based RSU awards405 623 
Adjusted weighted average common shares outstanding38,693 38,839 
Potentially dilutive securities not included in weighted average share calculation due to anti-dilutive effect25—