Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Common Share [Line Items]
Conversion price (in dollars per share)	$ 101.38	$ 101.38	$ 101.38
Numerator — basic and diluted
Net income	$ 235,514	$ 234,966	$ 210,682
Net income	$ 235,514	$ 234,966	$ 210,682
Denominator
Weighted average number of common shares outstanding — basic (in shares)	33,693	33,489	35,602
Effect of dilutive share-based awards (in shares)	599	701	763
Effect of dilutive stock options (in shares)	325	368	419
Effect of dilutive convertible notes (in shares)	1,166	779	365
Weighted average number of common shares outstanding — diluted (in shares)	35,783	35,337	37,149
Earnings per common share — basic (in dollars per share)	$ 6.99	$ 7.02	$ 5.92
Earnings per common share — diluted (in dollars per share)	$ 6.58	$ 6.65	$ 5.67
Stock Options And Share-Based Awards
Denominator
Antidilutive stock options and share-based awards (in shares)	9	4	66