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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Numerator:            
Net income $ 86,108 $ 28,005 $ 28,427 $ 33,715 $ 114,113 $ 62,142
Denominator:            
Weighted-average common shares for calculating basic earnings per share (shares) 47,425   40,754   47,831 40,893
Stock options and nonvested stock awards (shares) 74   48   66 36
Weighted-average common shares for calculating diluted earnings per share (shares) 47,499   40,802   47,897 40,929
Earnings per share:            
Basic (USD per share) $ 1.82   $ 0.70   $ 2.39 $ 1.52
Diluted (USD per share) $ 1.81   $ 0.70   $ 2.38 $ 1.52