Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2023

Earnings Per Share [Abstract]

Computation of earnings per share and reconciliation of basic and diluted weighted average common shares outstanding

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2023		2022		2023		2022
Net income	$	232,250	$	307,283	$	333,949	$	486,544
Amounts allocated to participating securities	(1,219)		(1,680)		(1,779)		(2,762)
Net income attributable to common stockholders	$	231,031	$	305,603	$	332,170	$	483,782
Weighted average common shares outstanding:
Basic	38,837		39,660		38,857		39,795
Effect of dilutive securities:
Stock options and employee stock purchase plan	278		404		298		436
Diluted	39,115		40,064		39,155		40,231
Earnings per share attributable to common stockholders:
Basic	$	5.95	$	7.71	$	8.55	$	12.16
Diluted	$	5.91	$	7.63	$	8.48	$	12.03
Anti-dilutive stock options excluded from diluted earnings per share computations (1)	64		33		65		1