Numerator:

Net income

$

7,889

$

21,874

$

17,535

$

44,376

Denominator:

Basic earnings per common share - weighted-average shares

81,381

81,263

81,365

81,236

Effect of dilutive stock options

65

149

77

158

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

81,446

81,412

81,442

81,394

Basic earnings per common share

$

0.10

$

0.27

$

0.22

$

0.55

Diluted earnings per common share

$

0.10

$

0.27

$

0.22

$

0.55