Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income	$ 258,507	$ 332,152	$ 288,957
Income allocated to participating securities	(1,379)	(1,881)	(1,125)
Net income available to common shareholders	$ 257,128	$ 330,271	$ 287,832
Denominator:
Weighted average common shares outstanding - basic (in shares)	50,341	54,595	55,379
Basic earnings per share (in dollars per share)	$ 5.11	$ 6.05	$ 5.20
Numerator:
Net income	$ 258,507	$ 332,152	$ 288,957
Income allocated to participating securities	(1,379)	(1,881)	(1,125)
Net income available to common shareholders	$ 257,128	$ 330,271	$ 287,832
Denominator:
Weighted average common shares outstanding - basic (in shares)	50,341	54,595	55,379
Diluted effect of stock options and PVRSUs (in shares)	359	526	504
Weighted average commons shares outstanding - diluted (in shares)	50,700	55,121	55,883
Diluted earnings per share (in dollars per share)	$ 5.07	$ 5.99	$ 5.15