Three Months Ended

Nine Months Ended

September 30,

2022

2021

2022

2021

Numerator:

Net income

$

50,317

$

55,845

$

126,198

$

487,074

Add back interest expense, net of tax benefit, on assumed conversion of 2024 Convertible Notes

445

—

1,335

—

Add back interest expense, net of tax benefit, on assumed conversion of 2026 Convertible Notes

667

—

2,000

—

Numerator used in computing net income per share — diluted

51,429

55,845

129,533

487,074

Denominator:

Weighted average number of common shares outstanding used in computing net income per share — basic

153,066

162,742

154,713

161,892

Effect of dilutive securities:

Stock options

283

802

318

461

Time-based restricted stock units

966

1,392

1,278

1,342

Performance-based restricted stock units

225

219

196

120

Restricted stock

49

82

122

113

Shares subject to issuance under Employee Stock Purchase Plan

8

5

9

2

2024 Convertible Notes assumed conversion

14,934

—

14,934

—

2026 Convertible Notes assumed conversion

14,934

—

14,934

—

Dilutive potential common shares

Weighted average number of common shares outstanding used in computing net income per share — diluted

184,465

165,242

186,504

163,930

Net income per share — basic

$

0.33

$

0.34

$

0.82

$

3.01

Net income per share — diluted

$

0.28

$

0.34

$

0.69

$

2.97