Earnings Per Share - Computation of basic and diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Basic earnings per common share:
Net income	$ 115,056	$ 139,926
Weighted-average basic common shares	76,301	75,902
Basic earnings per common share (in dollars per share)	$ 1.51	$ 1.84
Diluted earnings per common share:
Net income	$ 115,056	$ 139,926
Weighted-average basic common shares	76,301	75,902
Effect of dilutive securities (in shares)	359	487
Weighted-average dilutive shares	76,660	76,389
Diluted earnings per common share (in dollars per share)	$ 1.50	$ 1.83