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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share:
 Year Ended December 31,
 202020192018
 (In thousands, except shares and
per share amounts)
Basic:
Net Income Attributable to BWX Technologies, Inc.
$278,670 $244,115 $226,958 
Weighted-average common shares
95,457,193 95,377,414 99,062,087 
Basic earnings per common share
$2.92 $2.56 $2.29 
Diluted:
Net Income Attributable to BWX Technologies, Inc.
$278,670 $244,115 $226,958 
Weighted-average common shares (basic)
95,457,193 95,377,414 99,062,087 
Effect of dilutive securities:
Stock options, restricted stock units and performance shares (1)
269,304 433,124 956,966 
Adjusted weighted-average common shares
95,726,497 95,810,538 100,019,053 
Diluted earnings per common share
$2.91 $2.55 $2.27 
(1)At December 31, 2020, 2019 and 2018, none of our shares were antidilutive.