Owner Interest and Cost Method Investments (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Results of Operations (Unaudited)
Revenue	$ 29,751	$ 42,531	$ 59,105	$ 92,672
Net income (loss)	(7,094)	(7,208)	(12,561)	(17,032)
Equity income (loss) excluding impairments and amortization of intangible assets	(2,909)	(2,649)	(4,947)	(5,639)
Amortization of Intangible Assets	(327)	(536)	(592)	(1,122)
Total equity income (loss)	$ (3,236)	$ (3,185)	$ (5,539)	$ (6,761)