Three months ended

Nine months ended

September 30,

2021

2020

2021

2020

(in thousands, except per share amounts)

Net income available to common stockholders

$

27,515

$

10,785

$

62,901

$

35,308

Weighted average common shares outstanding used in computing basic income per share

33,537

33,477

33,643

33,159

Incremental options and RSUs

552

697

696

911

Weighted average common shares used in computing diluted net income per share

34,089

34,174

34,339

34,070

Net income per share

Basic

$

0.82

$

0.32

$

1.87

$

1.06

Diluted

$

0.81

$

0.32

$

1.83

$

1.04