Reportable Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Reconciliation of reportable segment operating income to consolidated income before income taxes
Operating income	$ 13,207	$ 21,376	$ 44,541	$ 64,593
Interest expense	25,990	26,297	75,073	79,161
Earnings from equity investments	(5,702)	(8,895)	(21,462)	(27,469)
Loss on early extinguishment of debt	15,464	4,185	15,464	4,185
Other	(537)	1,711	93	(159)
Net loss before income taxes	(22,008)	(1,922)	(24,627)	8,875
Reported Segment
Reconciliation of reportable segment operating income to consolidated income before income taxes
Operating income	31,440
Unallocated corporate costs
Reconciliation of reportable segment operating income to consolidated income before income taxes
Operating income	31,440	45,277	106,320	131,881
Unallocated corporate costs	$ 18,233	$ 23,901	$ 61,779	$ 67,288