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Earnings per share
6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
Earnings per share Earnings per share. Basic earnings per share (EPS) attributable to Stewart is calculated by dividing net income attributable to Stewart by the weighted-average number of shares of Common Stock outstanding during the reporting periods. Outstanding shares of Common Stock granted to employees that are not yet vested (restricted shares) are excluded from the calculation of the weighted-average number of shares outstanding for calculating basic EPS. To calculate diluted EPS, the number of shares is adjusted to include the number of additional shares that would have been outstanding if restricted units and shares were vested and stock options were exercised. In periods of loss, dilutive shares are excluded from the calculation of the diluted EPS and diluted EPS is computed in the same manner as basic EPS.
The calculation of the basic and diluted EPS is as follows:
 Three Months Ended 
 June 30,
Six Months Ended 
 June 30,
 2023202220232022
($000 omitted, except per share)
Numerator:
Net income attributable to Stewart15,815 61,660 7,625 119,557 
Denominator (000):
Basic average shares outstanding27,255 27,018 27,228 26,989 
Average number of dilutive shares relating to options43 154 52 226 
Average number of dilutive shares relating to grants of restricted units and shares146 121 122 162 
Diluted average shares outstanding27,444 27,293 27,402 27,377 
Basic earnings per share attributable to Stewart0.58 2.28 0.28 4.43 
Diluted earnings per share attributable to Stewart0.58 2.26 0.28 4.37