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Net Income per Common Share - Summary of Calculation of Basic and Diluted EPS (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Numerator:            
Net income $ 497,235 $ 172,580 $ 78,924 $ 8,767 $ 669,815 $ 87,691
Denominator:            
Weighted average shares outstanding, basic 207,114   116,634   206,844 116,446
Dilutive effect of options and RSUs 1,204   913   1,626 1,074
Weighted average shares outstanding, diluted 208,318   117,547   208,470 117,520
Net income per share:            
Basic $ 2.40   $ 0.68   $ 3.24 $ 0.75
Diluted $ 2.39   $ 0.67   $ 3.21 $ 0.75
Antidilutive and contingent RSUs excluded from diluted EPS 424   651   252 434