Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Summary of Earnings Per Share, Basic and Diluted

The calculation and reconciliation of basic and diluted earnings per share for the three and six months ended June 30, 2021 and 2020 is as follows (in thousands, except per share data): 

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Net income	$	196,247	$	158,488	$	380,486	$	305,548
Denominator for basic earnings per share	83,141		83,895		83,307		84,399
Dilutive securities	2,154		2,675		2,221		2,981
Denominator for diluted earnings per share	85,295		86,570		85,528		87,380
Basic earnings per share	$	2.36	$	1.89	$	4.57	$	3.62
Diluted earnings per share	$	2.30	$	1.83	$	4.45	$	3.50