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Earnings Per Share
9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
The Company has unvested share-based payment awards with a right to receive non-forfeitable dividends, which are considered participating securities under ASC 260, Earnings Per Share. The Company allocates earnings to participating securities and computes earnings per share using the two-class method. Under the two-class method, net income per share is computed by dividing net income allocated to common shareholders by the weighted average number of common shares outstanding for the period. In applying the two-class method, net income is allocated to both common shares and participating securities based on their respective weighted average shares outstanding for the period.

The following table sets forth the computation of basic and diluted net income per common share under the two-class method for the three and nine months ended September 30, 2019:
Three Months Ended September 30,Nine Months Ended September 30,
20192019
Basic Earnings Per Share
Net Income$111,897,852  $325,136,888  
Less: Allocated to participating securities1,389,659  3,699,548  
Net Income available to common shareholders$110,508,193  $321,437,340  
Basic weighted average shares outstanding251,075,859  252,811,950  
Net Income per share - Basic$0.44  $1.27  
Diluted Earnings Per Share
Allocation of Net Income used in basic computation$110,508,193  $321,437,340  
Reallocation of undistributed earnings6,051  15,389  
Net Income available to common shareholders - Diluted$110,514,244  $321,452,729  
Number of shares used in basic computation251,075,859  252,811,950  
Additional weighted average dilutive common stock equivalents1,503,123  1,455,901  
Diluted weighted average shares outstanding252,578,982  254,267,851  
Net income per share - Diluted$0.44  $1.26  
Shares related to stock plans not included in diluted average common shares outstanding because their effect would be anti-dilutive3,054  170,386