Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Computation of Earnings Per Common Share

Following is a summary of the information used in the computation of earnings per common share using the two-class method (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Numerator:
Net income to common shareholders	$	46,984	$	30,378	$	104,783	$	57,793
Net income allocated to participating securities - basic and diluted		281		101		844		252
Net income allocated to common shareholders - basic and diluted	$	46,703	$	30,277	$	103,939	$	57,541
Denominator:
Weighted-average common shares - basic		84,777		84,699		84,757		59,149
Dilutive potential common shares		855		286		768		293
Weighted average common shares - diluted		85,632		84,985		85,525		59,442
Earnings per common share:
Basic	$	0.55	$	0.36	$	1.23	$	0.97
Diluted	$	0.55	$	0.36	$	1.22	$	0.97