Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share Basic and Diluted

The following table sets forth the calculation of basic and diluted weighted average shares outstanding and earnings per share for the indicated periods.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
	(in thousands, except per share data)
Income (numerator):
Basic:
Net income	$	23,659		$	51,821		$	105,180		$	148,809
Net income attributable to participating securities		(540	)		(976	)		(2,404	)		(2,807	)
Net income attributable to common stock – basic	$	23,119		$	50,845		$	102,776		$	146,002
Diluted:
Net income	$	23,659		$	51,821		$	105,180		$	148,809
Net income attributable to participating securities		(540	)		(975	)		(2,402	)		(2,805	)
Net income attributable to common stock – diluted	$	23,119		$	50,846		$	102,778		$	146,004
Weighted average shares (denominator):
Weighted average shares – basic		48,342			48,029			48,300			47,963
Diluted effect of stock options		42			42			43			43
Weighted average shares – diluted		48,384			48,071			48,343			48,006
Basic income per common share	$	0.48		$	1.06		$	2.13		$	3.04
Diluted income per common share	$	0.48		$	1.06		$	2.13		$	3.04