Numerator:

Net income

$

70,373

$

110,354

$

85,428

Denominator:

Basic earnings per common share - weighted-average shares

81,272

81,692

82,872

Effect of dilutive stock options

141

267

536

Diluted earnings per common share - weighted-average shares and assumed conversions

81,413

81,959

83,408

Basic earnings per common share

$

0.87

$

1.35

$

1.03

Diluted earnings per common share

$

0.86

$

1.35

$

1.02