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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share



	Three months ended						Nine months ended
	September 30,						September 30,
	2023			2022			2023			2022
Net income	$	313,217		$	257,138		$	946,651		$	675,374
Shares:
Weighted-average number of common shares outstanding (for basic calculation)		27,550			27,773			27,593			27,907
Dilutive stock awards		131			183			146			209
Weighted-average number of common shares outstanding (for diluted calculation)		27,681			27,956			27,739			28,116
Basic earnings per share	$	11.37		$	9.26		$	34.31		$	24.20
Diluted earnings per share	$	11.32		$	9.20		$	34.13		$	24.02

Stock Awards Excluded from the Calculation of Diluted EPS



	Three months ended						Nine months ended
	September 30,						September 30,
	2023			2022			2023			2022
Stock awards subject to performance conditions		56			61			54			60
Stock awards that were antidilutive		61			167			93			164
Total stock awards excluded from diluted earnings per share		117			228			147			224