Three months ended September 30,

Nine months ended September 30,

2021

2020

2021

2020

Numerator:

Net income

$

41,982

$

34,453

$

130,008

$

74,865

Denominator:

Weighted average shares of common stock outstanding

11,692

11,766

11,739

11,772

Effect of dilutive common stock equivalents

93

91

101

68

Weighted average shares of common stock outstanding

11,785

11,857

11,840

Earnings per share - basic

$

3.59

$

2.93

$

11.07

$

6.36

Earnings per share - diluted

$

3.56

$

2.91

$

10.98

$

6.32