Numerator:

Numerator for basic and diluted earnings per share – Net income available to common shareholders

$

72,438

$

78,661

$

132,760

$

150,269

Denominator:

Denominator for basic earnings per share – weighted average shares outstanding

78,300

78,270

78,991

78,706

Effect of dilutive securities– Employee stock options and restricted stock awards

2,187

2,508

2,454

2,761

Denominator for diluted earnings per share – adjusted weighted average shares outstanding and assumed conversions

80,487

80,778

81,445

81,467

Basic earnings per common share

$

0.93

$

1.01

$

1.68

$

1.91

Diluted earnings per common share and common share equivalents

$

0.90

$

0.97

$

1.63

$

1.84