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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2022

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share



	Three months ended						Nine months ended
	September 30,						September 30,
	2022			2021			2022			2021
Net income	$	257,138		$	204,434		$	675,374		$	519,509
Shares:
Weighted-average number of common shares outstanding (for basic calculation)		27,773			28,150			27,907			28,137
Dilutive stock awards		183			325			209			383
Weighted-average number of common shares outstanding (for diluted calculation)		27,956			28,475			28,116			28,520
Basic earnings per share	$	9.26		$	7.26		$	24.20		$	18.46
Diluted earnings per share	$	9.20		$	7.18		$	24.02		$	18.22

Stock Awards Excluded from the Calculation of Diluted EPS



	Three months ended						Nine months ended
	September 30,						September 30,
	2022			2021			2022			2021
Stock awards subject to performance conditions		61			75			60			74
Stock awards that were antidilutive		167			3			164			42
Total stock awards excluded from diluted earnings per share		228			78			224			116