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Earnings Per Share
9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
Basic earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of common shares plus the effect of dilutive potential common shares outstanding during the period. The following table sets forth the computation of basic and diluted earnings per share (shares in thousands):
Three Months EndedNine Months Ended
 September 30,September 30,
 2021202020212020
Numerator:
Net income available to common stockholders$409 $208 905 593 
Denominator:
Denominator for basic earnings per share—weighted-average common shares72,463 72,190 72,419 72,795 
Effect of dilutive securities:
Employee stock options12 
Restricted stock units243 243 255 193 
Denominator for diluted earnings per share—adjusted weighted-average common shares72,710 72,442 72,678 73,000 
Basic earnings per share$5.65 $2.88 $12.49 $8.14 
Diluted earnings per share$5.63 $2.87 $12.45 $8.12