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Earnings per Share (EPS) - Reconciliation of Net Income and Weighted Average Common Shares Outstanding (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Earnings Per Share [Abstract]        
Net income $ 231,769 $ 159,795 $ 505,936 $ 295,443
Basic weighted average shares outstanding (in shares) 106,921 112,118 107,540 112,067
Dilutive effect of nonvested shares (in shares) 362 336 393 349
Diluted weighted average shares outstanding (in shares) 107,283 112,454 107,933 112,416
Basic earnings per share (in dollars per share) $ 2.17 $ 1.43 $ 4.70 $ 2.64
Diluted earnings per share (in dollars per share) $ 2.16 $ 1.42 $ 4.69 $ 2.63