Earnings Per Share (Schedule of Dilutive Impact of Equity Method Investee Stock Options) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Income (loss) from continuing operations - basic	$ 2,863	[1]	$ 37,582	[1]	$ (5,402)	[1]	$ (13,587)	[1]	$ 45,646	[1]	$ 65,404	[1]	$ (9,718)	[1]	$ (890)	[1]	$ 21,456	$ 100,442	$ 52,608
Less: Adjustment for dilutive effect of Telesat stock options																	(641)	(683)	(4,352)
Income (loss) from continuing operations - diluted																	$ 20,815	$ 99,759	$ 48,256

[1] The quarterly earnings per share information is computed separately for each period. Therefore, the sum of such quarterly per share amounts may differ from the total for the year.