Earnings Per Share - Computation of basic and diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic earnings per common share:
Net income	$ 124,144	$ 133,043	$ 387,517	$ 352,547
Weighted-average basic common shares	76,139	75,606	76,034	74,185
Basic earnings per common share (in dollars per share)	$ 1.63	$ 1.76	$ 5.10	$ 4.75
Diluted earnings per common share:
Net income	$ 124,144	$ 133,043	$ 387,517	$ 352,547
Weighted-average basic common shares	76,139	75,606	76,034	74,185
Effect of dilutive securities (in shares)	432	576	412	606
Weighted-average dilutive shares	76,571	76,182	76,446	74,791
Diluted earnings per common share (in dollars per share)	$ 1.62	$ 1.75	$ 5.07	$ 4.71