Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Basic and Diluted Weighted Average Shares Outstanding

A reconciliation of basic and diluted weighted average shares outstanding is as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
	(Amounts in thousands, except per share data)
Net income	$	33,498	$	14,552	$	99,181	$	40,228
Weighted average shares used in computing net      income per share - basic		55,015		52,545		54,918		52,341
Effect of dilutive shares:
Options and stock units		919		916		913		951
Convertible senior notes		1,373		8		1,180		8
Dilutive effect of unvested performance stock units		61		—		61		—
Dilutive potential common shares		2,353		924		2,154		959
Weighted average shares used in computing net      income per share - diluted		57,368		53,469		57,072		53,300
Earnings per share:
Basic	$	0.61	$	0.28	$	1.81	$	0.77
Diluted	$	0.58	$	0.27	$	1.74	$	0.75