Earnings per share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings per Share [Abstract]

Earnings per share

	Quarter ended				Six months ended
	June 30,		June 30,		June 30,		June 30,
	2011		2010		2011		2010
BASIC EPS:
Net income available to common shareholders	$	29,763	$	31,493	$	57,324	$	46,883
Average common shares outstanding		109,138		98,968		108,954		93,400
Net income per share — basic	$	0.27	$	0.32	$	0.53	$	0.50
DILUTED EPS:
Net income available to common shareholders	$	29,763	$	31,493	$	57,324	$	46,883
Add: interest expense on convertible bonds		—		—		—		—
	$	29,763	$	31,493	$	57,324	$	46,883
Avg common shares outstanding		109,138		98,968		108,954		93,400
Add: Equivalents from stock options and restricted stock		1		1		1		3
Add: Equivalents-convertible bonds		—		—		—		—
Average common shares and equivalents outstanding		109,139		98,969		108,955		93,403
Net income per common share — diluted	$	0.27	$	0.32	$	0.53	$	0.50