Debt (Details) (USD $) In Thousands, except Per Share data	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 3.25% Convertible Notes due 2011 [Member]	Dec. 31, 2010 3.25% Convertible Notes due 2011 [Member]	Oct. 31, 2004 3.25% Convertible Notes due 2011 [Member]	Sep. 30, 2011 8.75% Senior Notes due 2015 [Member]	Dec. 31, 2010 8.75% Senior Notes due 2015 [Member]	Mar. 31, 2010 8.75% Senior Notes due 2015 [Member]	Sep. 30, 2011 9.75% Senior Secured Notes due 2015 [Member]	Dec. 31, 2010 9.75% Senior Secured Notes due 2015 [Member]	Aug. 31, 2009 9.75% Senior Secured Notes due 2015 [Member]	Sep. 30, 2011 11.25% Senior Secured Notes due 2013 [Member]	Dec. 31, 2010 11.25% Senior Secured Notes due 2013 [Member]	Jun. 30, 2009 11.25% Senior Secured Notes due 2013 [Member]	Sep. 30, 2011 13% Senior Notes due 2013 [Member]	Dec. 31, 2010 13% Senior Notes due 2013 [Member]	Sep. 30, 2011 7% Exchangeable Senior Subordinated Notes due 2014 [Member]	Dec. 31, 2010 7% Exchangeable Senior Subordinated Notes due 2014 [Member]	Aug. 31, 2008 7% Exchangeable Senior Subordinated Notes due 2014 [Member]	Sep. 30, 2011 7.625% Senior Notes due 2018 [Member]	Dec. 31, 2010 7.625% Senior Notes due 2018 [Member]
Debt
Conversion price per share			$ 5.30	$ 5.30	$ 5.30												$ 1.875	$ 1.875	$ 1.875
Debt carrying value			$ 23,866	$ 191,979		$ 800,000	$ 800,000		$ 257,000	$ 257,000		$ 0	$ 36,685		$ 778,500	$ 778,500	$ 550,000	$ 550,000		$ 700,000	$ 700,000
Less: discounts			(3)	(515)		(10,389)	(12,213)	14,000	(8,814)	(10,116)	12,708	0	(1,705)	37,352	(44,843)	(59,592)	(6,388)	(7,620)		(11,196)	(12,054)
Other debt:
Capital leases	3,434	7,229
Total debt	3,031,167	3,217,578
Less: total current maturities non-related party	25,588	195,815
Total long-term	3,005,579	3,021,763
Related party long-term debt	328,029	325,907
Total long-term, excluding related party	$ 2,677,550	$ 2,695,856