For the three months ended June 30,

For the six months ended June 30,

2013

2012

2013

2012

Net income available to common stockholders

$

18,156

$

8,473

$

32,206

$

15,586

Weighted average number of common shares outstanding

43,334,441

41,319,057

43,132,398

41,316,958

Effect of stock options

27,114

143,537

24,429

160,906

Weighted average diluted number of common shares outstanding

43,361,555

41,462,594

43,156,827

41,477,864

Basic earnings per share

$

0.42

$

0.21

$

0.75

$

0.38

Diluted earnings per share

$

0.42

$

0.20

$

0.75

$

0.38