Earnings Per Share	12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings Per Share	17. Earnings Per Share During the years ended December 31, 2021, 2020 and 2019, we used the treasury stock method of calculating earnings per share (which we refer to as “EPS”) as our currently non-vested RSUs and PSUs do not have participating rights.The following table sets forth the computation of basic and diluted earnings per share for the years ended December 31, 2021, 2020 and 2019 (in thousands, except share and per share information): Year Ended December 31, 2021 2020 2019Numerator Net income $ 498,504 $ 206,157 $ 112,994Denominator Weighted average common shares outstanding - basic 33,706,782 33,312,554 30,886,382Dilutive effect of restricted stock units 738,136 297,544 300,570Weighted average common shares outstanding - diluted 34,444,918 33,610,098 31,186,952Earnings per share: Basic $ 14.79 $ 6.19 $ 3.66Diluted $ 14.47 $ 6.13 $ 3.62 Stock-based awards are excluded from the calculation of diluted EPS in the event they are subject to unsatisfied performance conditions or are antidilutive. We excluded 0.2 million, 0.8 million, and 0.6 million common stock unit equivalents from diluted earnings per share during the years ended December 31, 2021, 2020 and 2019 respectively, related to the PSUs for which performance conditions remained unsatisfied.

Earnings Per Share

12 Months Ended

Dec. 31, 2021

17. Earnings Per Share During the years ended December 31, 2021, 2020 and 2019, we used the treasury stock method of calculating earnings per share (which we refer to as “EPS”) as our currently non-vested RSUs and PSUs do not have participating rights.The following table sets forth the computation of basic and diluted earnings per share for the years ended December 31, 2021, 2020 and 2019 (in thousands, except share and per share information): Year Ended December 31, 2021 2020 2019Numerator Net income $ 498,504 $ 206,157 $ 112,994Denominator Weighted average common shares outstanding - basic 33,706,782 33,312,554 30,886,382Dilutive effect of restricted stock units 738,136 297,544 300,570Weighted average common shares outstanding - diluted 34,444,918 33,610,098 31,186,952Earnings per share: Basic $ 14.79 $ 6.19 $ 3.66Diluted $ 14.47 $ 6.13 $ 3.62 Stock-based awards are excluded from the calculation of diluted EPS in the event they are subject to unsatisfied performance conditions or are antidilutive. We excluded 0.2 million, 0.8 million, and 0.6 million common stock unit equivalents from diluted earnings per share during the years ended December 31, 2021, 2020 and 2019 respectively, related to the PSUs for which performance conditions remained unsatisfied.