Investments in Affiliates (Equity in Net Income (Losses) of Affiliates) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]
Equity in net income (loss) of affiliates	$ 33,358	$ 41,586	$ 26,209	$ 37,102
Telesat Holdings Inc [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net income (loss) of affiliates	34,242	43,654	34,242	42,179
XTAR, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net income (loss) of affiliates	(1,569)	(2,068)	(5,068)	(5,077)
Other Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net income (loss) of affiliates	$ 685		$ (2,965)