Debt (Tables)

9 Months Ended

Sep. 30, 2011

Debt

Schedule of long-term and short-term debt

	SEPTEMBER 30,			DECEMBER 31,
(in thousands)	2011			2010
Senior notes
6.9 percent senior notes due June 2013	$	173,887		$	186,192
5.4 percent senior notes due January 2015	126,481			158,981
8.4 percent senior notes due May 2017	230,000			230,000
6.6 percent senior notes due May 2020	300,000			300,000
Total senior notes	830,368			875,173
Debt discount	(3,800		)	(4,305		)
Senior notes, net	826,568			870,868
Secured notes payable1	5,258			8,921
Total debt	$	831,826		$	879,789

1 Excludes secured notes payable of $89,000 associated with discontinued operations at September 30, 2011 and December 31, 2010.