Annual report pursuant to Section 13 and 15(d)

Earnings per Share

Earnings per Share
12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Share s per share ("EPS") is presented on both a basic and diluted basis. Basic EPS is based on the weighted average number of common shares outstanding. Diluted EPS reflects the potential dilution that could occur if outstanding securities or other contracts to issue common stock were exercised or converted into common stock.
A reconciliation of the common shares used in the denominator for computing basic and diluted EPS is as follows:
Year Ended December 31,
(in thousands, except per share amounts)
2019 2018 2017
Weighted average common shares outstanding, used in computing basic earnings per share
67,837    69,614    69,759   
Effect of dilutive stock options and restricted stock units 656    787    694   
Weighted-average common shares outstanding, used in computing diluted earnings per share
68,493    70,401    70,453   
Earnings per share of common stock attributable to Columbia Sportswear Company:
Basic $ 4.87    $ 3.85    $ 1.51   
Diluted $ 4.83    $ 3.81    $ 1.49   
Stock options and service-based restricted stock units, and performance-based restricted stock representing 405,928, 372,516 and 928,443 shares of common stock for the years ended December 31, 2019, 2018 and 2017, respectively, were outstanding but were excluded from the computation of diluted EPS because their effect would be anti-dilutive as a result of applying the treasury stock method or because performance conditions had not been met.