Debt and Credit Facilities (Tables)

3 Months Ended

Mar. 31, 2014

Debt and Credit Facilities

Schedule of long-term and short-term debt and credit facilities

(in thousands)	MARCH 31, 2014			DECEMBER 31, 2013
Senior notes
5.4 percent senior notes due January 2015	$	126,481		$	126,481
8.4 percent senior notes due May 2017	230,000			230,000
6.6 percent senior notes due May 2020	300,000			300,000
5.4 percent senior notes due October 2022	250,000			250,000
Convertible senior notes
1.6 percent convertible senior notes due May 2018	225,000			225,000
0.25 percent convertible senior notes due June 2019	267,500			267,500
Total senior notes and convertible senior notes	1,398,981			1,398,981
Debt discount	(2,195		)	(2,362		)
Senior notes and convertible senior notes, net	1,396,786			1,396,619
Secured notes payable	767			689
Total debt	$	1,397,553		$	1,397,308
Financial services credit facility	$	59,119		$	73,084