Reportable Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of reportable segment operating income to consolidated income before income taxes
Operating income	$ 25,655	$ 16,505	$ 49,236	$ 52,830
Interest expense	25,125	25,990	75,271	75,073
Earnings from equity investments	3,381	5,702	13,012	21,462
Loss on early extinguishment of debt	0	(15,464)	0	(15,464)
Other	(45)	656	(850)	(30)
Net income (loss) from continuing operations before income taxes	3,866	(18,591)	(13,873)	(16,275)
Reported Segment
Reconciliation of reportable segment operating income to consolidated income before income taxes
Operating income	48,351	34,738	117,994	114,609
Unallocated corporate costs
Reconciliation of reportable segment operating income to consolidated income before income taxes
Operating income	48,351
Unallocated corporate costs	$ (22,696)	$ (18,233)	$ (68,758)	$ (61,779)