Credit Risk and Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2014

The fair value of our debt instruments at June 30, 2014 and December 31, 2013 was as follows:



	June 30, 2014		December 31, 2013
	(In thousands)
3.125% Senior Convertible Notes due July 2014	$	—	$	106,939
6.75% Senior Notes due April 2015	—		144,653
6.75% Senior Notes due April 2016	213,651		214,904
3.375% Senior Convertible Notes due July 2016	160		60,487
7.0% Senior Notes due June 2017	332,244		333,259
7.625% Senior Notes due October 2018	293,125		288,875
6.5% Senior Notes due April 2019	—		210,000
7.0% Senior Notes due May 2019	—		270,000
4.5% Senior Notes due November 2020	206,000		192,610
8.0% Senior Notes due November 2021	175,500		173,625
5.375% Senior Notes due January 2022	443,063		431,588
5.375% Senior Notes due May 2024	568,563		—
7.5% Senior Notes due April 2027	217,500		215,750
Term Loan due July 2018	465,000		600,000
Bank credit facility due July 2018	235,000		30,000
Mortgage notes and other debt, maturities through 2050	4,302		4,752
Total fair value of debt instruments	$	3,154,108	$	3,277,442