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Shareholders' Equity - Summary of Table Reconciling Basic and Diluted Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Basic Net Income Per Share      
Net income, basic $ 277,538 $ 226,409 $ 238,206
Weighted average common shares outstanding (in shares) 165,178 165,509 171,907
Effect of dilutive securities:      
Restricted stock (in shares) 729 632 733
Stock options (in shares) 22 36 47
Basic Net Income Per Share (in dollars per share) $ 1.68 $ 1.37 $ 1.39
Diluted Net Income Per Share      
Net income $ 277,538 $ 226,409 $ 238,206
Weighted average common shares outstanding (in shares) 165,178 165,509 171,907
Weighted average shares outstanding (in shares) 165,929 166,177 172,687
Diluted Net Income Per Share (in dollars per share) $ 1.67 $ 1.36 $ 1.38