Accumulated Other Comprehensive Income (Loss) (Components of Other Comprehensive Income and Related Tax Effects) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Accumulated Other Comprehensive Loss [Abstract]
Net actuarial gain (loss) and prior service credits, Before-Tax Amount	$ 103	[1]	$ 1,501	[1]
Proportionate share of Telesat Holdco other comprehensive income (loss), Before-Tax Amount	1,126		718
Other comprehensive income (loss), Before-Tax Amount	1,229		2,219
Net actuarial gain (loss) and prior service credits, Tax (Expense) Benefit	(39)		(573)
Proportionate share of Telesat Holdco other comprehensive income (loss), Tax (Expense) Benefit	(427)		(274)
Other comprehensive income, Tax (Expense) Benefit	(466)		(847)
Net actuarial gain (loss) and prior service credits, Net-of Tax Amount	64		928
Proportionate share of Telesat Holdco other comprehensive income (loss)	699		444
Other comprehensive income (loss), Net-of Tax Amount	$ 763		$ 1,372

[1] Reclassifications are included in general and administrative expenses.