Investments In Affiliates (Equity In Net Income (Losses) Of Affiliates) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Schedule of Equity Method Investments [Line Items]
Equity in net (loss) income of affiliates	$ (7,281)	$ 6,869
Telesat Holdings Inc [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net (loss) income of affiliates	(718)	7,380
XTAR, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net (loss) income of affiliates	(1,763)	(511)
Other Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net (loss) income of affiliates	$ (4,800)